Sell Stuff Online
This guide shows you how to sell stuff online whether you run a business or just want to clear out your garage. The platform you choose matters far more than the quality of your photos.
Most people think they need a professional website or storefront before they can start selling. This is completely backwards. The biggest online sellers often started on existing marketplaces where millions of buyers already shop every day. Building your own site first means spending months on setup while making zero sales. Start where the customers already are.
Pick the right platform to sell stuff online
Each selling platform attracts different buyers and charges different fees. eBay works well for collectibles, used electronics, and items with established market values. Facebook Marketplace costs nothing and connects you with local buyers who pick up items in person. Amazon makes sense for new products you can buy wholesale or manufacture.
Etsy targets handmade goods and vintage items over 20 years old. Poshmark and Depop focus entirely on clothing and accessories. Mercari handles almost everything but skews toward younger buyers looking for deals.
Match your items to the platform where similar products actually sell. Spend 30 minutes browsing each marketplace and searching for items like yours. Check the sold listings, not just what people have listed. This shows you real prices and real demand.
Price based on completed sales, not hopes
Your asking price should reflect what identical items recently sold for, not what you paid or what you think it’s worth. On eBay, filter search results to show only sold listings. On Facebook Marketplace, scroll through similar active listings and drop your price 10% below the average.
Price too high and your listing gets buried under cheaper options. Price at market rate and you sell within days. Most platforms reward fast-selling items with better visibility.
For unique items without direct comparisons, start high and drop the price 15% every three days until someone bites. The market will tell you the right price faster than any formula.
Write descriptions that answer buyer questions
Buyers want specific measurements, condition details, and information about flaws. A good description for a used jacket includes the brand, size tag measurements, fabric content, visible wear, missing buttons, stains, and how it fits compared to standard sizing.
Skip the marketing language. Nobody cares that an item is “perfect for summer” or “great for collectors.” They care about the exact length in inches, whether the zipper works, and if the color has faded.
Answer the questions you would ask before buying. This cuts your message volume in half and increases your conversion rate.
Take photos that show condition, not artistry
Good selling photos are clear, well-lit, and show every angle. Take pictures near a window during daytime. Avoid overhead lights that create harsh shadows. Use a plain background so the item stands out.
Show the front, back, sides, top, and bottom. Photograph any damage, wear, stains, or defects up close. Include a photo of size tags and brand labels. Add a measurement photo with a ruler or tape measure in frame.
Blurry photos kill sales even when you price low. Buyers assume you’re hiding something. Take 30 seconds to wipe your phone lens and hold steady.
Understand shipping costs before listing
Shipping eats your profit if you guess wrong. Weigh your item on a kitchen scale. Measure the box dimensions. Use the USPS, UPS, or FedEx online calculators to get exact shipping costs to different zones.
For items under one pound, USPS First Class costs less than any alternative. For heavy items over 10 pounds, compare all carriers because prices vary wildly based on distance. Regional Rate boxes from USPS sometimes cost half the price of standard Priority Mail for heavy items going short distances.
Charge exact shipping or build the cost into your price with free shipping. Free shipping listings rank higher on most platforms. Just add your shipping cost to your item price.
Ship fast and communicate tracking
Ship within 24 hours of receiving payment. This single habit improves your seller ratings more than anything else. Buyers who wait a week assume you forgot or scammed them.
Buy shipping labels online through your selling platform. This costs less than the post office counter and automatically uploads tracking to the buyer. Print at home or save the PDF and print at the library for 10 cents.
Send the tracking number immediately, even though most platforms do this automatically. A quick message builds trust and reduces worried buyers checking in.
Handle returns without drama
Accept returns on anything expensive or new. Fighting a return costs more time than refunding the money. Most platforms force you to accept returns anyway, so offering them upfront makes you look professional.
For cheap items under $20, sometimes refunding without requiring a return makes financial sense. Return shipping costs you $8 to $15. Just refund and tell the buyer to keep or donate it. This often earns you a positive review that drives future sales.
When you sell stuff online regularly, expect 2 to 5% of sales to come back. Account for this in your pricing.
Start with items you already own
Your first 20 listings should come from your house. This teaches you the process without financial risk. Sell old phones, unused kitchen gadgets, books, clothes that don’t fit, and duplicate items.
Each sale teaches you something about pricing, shipping, customer communication, and platform mechanics. You’ll make mistakes. Better to learn on items that cost you nothing.
Track which categories sell fastest and which create headaches. This data guides what you might sell as a real business later.
Scale up only after mastering the basics
Don’t buy inventory until you’ve successfully sold 50 items you already owned. The skills that move personal items differ from the skills needed to profit from purchased inventory.
When you’re ready to scale, start with retail arbitrage. Buy clearance items from stores like Walmart, Target, or Home Depot and resell them for more online. This requires minimal cash and teaches you to spot profitable products.
Check prices with the Amazon or eBay app while standing in the clearance aisle. Only buy items where you can double your money after fees and shipping. Pass on everything else.
Learn the fee structure of each platform
eBay charges about 13% of your total sale including shipping. Amazon takes 15% plus monthly storage fees. Facebook Marketplace charges nothing for local sales but takes 5% on shipped items. Poshmark keeps 20% on sales over $15.
Payment processing adds another 3% on most platforms. Calculate your net profit by subtracting all fees, shipping costs, and what you paid for the item. Plenty of new sellers lose money because they ignore fee calculations.
A $50 sale on eBay nets you about $40 after fees. Factor this into your minimum acceptable price.
Build systems that save time
After your first 30 sales, you’ll notice you answer the same questions repeatedly. Create template responses for common questions about shipping time, measurements, and returns. Save photos of your packing setup and shipping materials.
Buy shipping supplies in bulk. Poly mailers cost 7 cents each when you buy 100 versus 50 cents each at the store. Keep boxes from your own online orders and reuse them.
Set aside specific times for listing, packing, and post office runs. Batching these tasks cuts your time per sale by half compared to handling each sale individually as it comes in.
The people who succeed at selling online treat it like the systematic process it actually is, not a creative pursuit or passive income dream.
List five items you already own on Facebook Marketplace tonight with the title, three photos, and a price 20% below what similar items are currently listed for.
Frequently Asked Questions
What sells fastest online right now?
Electronics, name brand clothing in good condition, working video games, small kitchen appliances, and collectibles from popular franchises sell within 24 to 48 hours when priced at market rate. Seasonal items like heaters or fans sell fast during their peak months.
How much can I realistically make selling things online?
Selling personal items earns $500 to $2000 total until you run out of stuff. Treating it as a business with purchased inventory can generate $500 to $3000 monthly profit, but requires 15 to 30 hours of work weekly and upfront cash.
Do I need to pay taxes on items I sell online?
Selling personal items for less than you paid generates no taxable income. Once you sell for profit or buy items specifically to resell, you must report income over $600 annually. Platforms now report sales to the IRS automatically.
Which platform has the lowest selling fees?
Facebook Marketplace charges zero fees for local pickups. For shipped items, Mercari and Facebook both charge around 5% plus payment processing. eBay and Poshmark charge the highest fees at 13% to 20% but often attract buyers willing to pay more.
How do I avoid getting scammed as a seller?
Only ship to the address provided through the platform. Never accept payment outside the platform. Photograph items and packaging before shipping. For expensive items, require signature confirmation and buy insurance through the shipping carrier.
