Thrift stores, garage sales, and Facebook Marketplace are your inventory suppliers. eBay and Mercari are your storefronts.
| Item | Cost |
|---|---|
| Starting inventory budget (thrift store / garage sale runs) | $50-150 |
| Shipping supplies: poly mailers, boxes, tape, bubble wrap | $20-40 |
| Postal scale (for accurate shipping quotes) | $12-25 |
| Clean backdrop for photos (white poster board or sheet) | $3-10 |
| eBay / Mercari seller accounts (free to create) | $0 |
| Total | $85-225 |
Beginners who try to sell everything make less money than people who know one category cold. Pick a niche based on what you already know: sneakers, vintage clothing, trading cards (Pokemon, sports cards), electronics, vintage kitchenware, books, video games, or small furniture. The goal is to quickly recognize what's underpriced and what isn't — that judgment comes from buying and selling in a specific category, not from browsing everything. Research completed eBay listings (filter by "sold") in your chosen category to learn actual prices before you buy anything.
Hit 2-3 thrift stores or garage sales with $50-100 in your pocket. At Goodwill, target the clothing and housewares sections. At garage sales, look for electronics, tools, sports cards, and vintage items. For each item you consider: pull out your phone, search eBay sold listings, and check what it actually sells for. Only buy if you can sell for 3x what you paid (covers fees, shipping, and your time). Don't buy anything you can't research — emotion is how you end up with unsellable inventory.
Photos sell. A dirty item with bad lighting looks worthless. A clean item on a white background with good natural light looks premium. The process: wipe down the item, remove tags or stickers, shoot against a white background in daylight (not direct sun), take 5-8 photos including front, back, sides, labels, and any flaws. Disclose every flaw in your listing description — returns from undisclosed damage destroy your seller rating and profit margin.
Platform matching matters: eBay for electronics, tools, collectibles, and vintage anything. Mercari for general household and clothing. Poshmark specifically for women's clothing and accessories. Depop for vintage and streetwear (younger buyer demographic). Facebook Marketplace for large items (furniture, appliances) that you can't ship. For most beginners, start with eBay and Mercari — both have large buyer bases and built-in shipping label tools that make your first sales friction-free.
Shipping is where beginners lose money. Weigh every item before listing and use the platform's shipping calculator for accurate estimates. Offer free shipping on items under 1 lb to improve search ranking — build the shipping cost into your price. Use USPS First Class for packages under 1 lb, USPS Priority Mail for 1-3 lbs, UPS or FedEx for heavier items. Source free boxes from USPS (free Priority Mail boxes), Costco / liquor stores, and Facebook Marketplace free listings. Poly mailers are the cheapest option for soft goods like clothing.
The business compounds when you reinvest. After your first $100 in sales, buy $50-75 more inventory. After $500 in sales, consider estate sales and online auctions (GovDeals, ShopGoodwill.com) for better items at lower prices. Track every purchase and sale in a simple spreadsheet: item, purchase price, sale price, fees, shipping, profit. Knowing your average profit margin per category tells you where to focus — double down on what works, stop buying what doesn't.
Thrifted clothing, books, small collectibles, toys, vintage kitchenware. Low risk to buy ($1-15), steady volume, good for learning the eBay/Mercari listing process. Target 3-5x return on purchase price.
Used electronics (cameras, game consoles, small appliances), vintage branded clothing, discontinued products, sports memorabilia. Requires more research but higher per-item profit. $10-50 buy price, $50-200 sale price.
Sought-after sneakers, graded trading cards, small furniture, branded tools. Requires category expertise but can generate $100-300 profit per item. Source from garage sales, estate sales, Facebook Marketplace, or clearance events.
Copy these templates, fill in your details, and start marketing today. Every template is tested and proven.
[Brand] [Item Type] — [Size] — [Color/Pattern] — [Condition] Condition: [Excellent/Good/Fair] — [describe any flaws honestly: small fain flaw on sleeve, otherwise excellent] Measurements (laying flat): • Chest: [X]" • Length: [X]" • Sleeve: [X]" Ships within 1 business day via USPS. Ships in a poly mailer with extra protection for vintage items. Buying multiple items? Message me for a combined shipping discount. [Note any notable features: vintage, rare colorway, discontinued, made in USA, etc.]
[Item Name] — [Brand] — [Condition] — $[Price] I'm selling a [describe item in 1-2 sentences]. Works perfectly / Shows [describe any wear]. Dimensions: [L x W x H] / Weight: [X lbs] Pickup only — I'm in [Your Area / Cross Streets]. Available [Days/Times]. Cash, Venmo, or Zelle. No holds without deposit. Feel free to ask questions or come see it before buying.
Found this [item] at Goodwill for $[X]. Listed it on eBay for $[X]. Here's the breakdown: Buy price: $[X] Shipping supplies: $[X] eBay fees (~13%): $[X] Shipping: $[X] Profit: $[X] 💰 This is the [category] flipping strategy — sourcing underpriced items from thrift stores and reselling at market value. Not every flip hits, but consistent sourcing means consistent profit. DM me if you want the sourcing guide I use. #Reselling #ThriftFlip #EbayFlip #SideHustle
"Hey — I'm interested in [item]. Is [X]% below asking price] a fair offer? I can pick up [today/tomorrow] and pay cash or Venmo on the spot. I flip items on eBay so I need some margin, but I can move quickly and won't waste your time." For group / estate sales: "I'm buying a few items — would you do $[X] for all of these together? I'll pay now and take them with me today." For Craigslist free section: "Hi — I saw your free [item] post. I can pick it up today anytime — does [time] work? I'll bring help if it's heavy."