The Upcyclist Blog

Know Your Numbers. Flip Smarter.

Tips, math, and strategy for resellers. Learn how to price for profit, source what sells, and grow from first flip to full-time.

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3 articles about Sourcing.

Close-up of used golf iron heads stacked in a bag, with worn Mizuno, Callaway and Divine clubs showing scratches and faded logos
Online arbitrageSourcingeBay feesProfit and margins

Online Arbitrage: Check the Margin Before Buying

Online arbitrage means buying from one website and reselling on another. Here is how to check the eBay math before you click buy.

November 3, 2026Read →
Vintage irons and coffee grinders among assorted secondhand objects on a market table.
SourcingProfit and marginsInventory tracking

Estate Sale Sourcing: Find Sales and Buy for Profit

Estate sales can be great sourcing, or a fast way to fill a garage with inventory that never sells. Learn where to find sales, when to go and what to pay.

October 31, 2026Read →
Flea market table with a vintage Ricoh rangefinder camera in a worn leather case, older digital cameras, cufflinks, spoons and a red toy car
SourcingProfit and marginseBay feesPoshmark fees

Best Items to Flip: A Profit-First Buying Checklist

Stop chasing someone else's list of hot flips. Use this checklist to test any item's fees, shipping and margin before you pay for it.

September 12, 2026Read →

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