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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14 articles about Profit and margins.

A person in a blue jacket holds a smartphone and payment card outdoors.

eBay and PayPal Fees: What Sellers Pay Now

eBay sellers no longer pay a separate PayPal fee. Payment processing is part of eBay's final value fee. Here is what changed and what you pay now.

November 7, 2026Read →
A red and black Polaroid SuperColors instant camera on a light surface beside instant photos.

How Much Can I Sell This For? Check eBay Sold Listings

Asking prices tell you what sellers hope for. eBay sold listings tell you what buyers paid. Here is how to turn them into a price and a floor.

November 6, 2026Read →
A person uses a calculator and writes figures on paper beside a wooden keyboard and phones.

How Much Does eBay Take From a Sale? The Real Percentage

eBay's fee is 13.6% in most categories, but it is charged on shipping and sales tax too. See what eBay really takes on $20, $100 and $1,000 sales.

November 5, 2026Read →
Close-up of used golf iron heads stacked in a bag, with worn Mizuno, Callaway and Divine clubs showing scratches and faded logos

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.

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 →
A black calculator, notepad, pencil and coins above an envelope marked Taxes.

Do You Pay Taxes on Reselling? What to Track Before Tax Season

Your marketplace payouts are not your taxable profit. Learn when reselling income is taxable, what Form 1099-K shows, and which expenses to track all year.

October 30, 2026Read →
Stacked cardboard shipping boxes sealed with tape, including a red fragile handling label.

Shipping Strategies for Resellers: Free, Flat, or Calculated

Free, flat or calculated shipping can change your profit on the same item by several dollars. See the math for each and pick the right one for what you sell.

October 29, 2026Read →
A taped cardboard shipping box with a postage label, a yellow padded envelope and a brown paper mailer sitting on a stone front step

Poshmark Shipping Costs: Who Pays and How Profit Changes

The buyer pays Poshmark's flat shipping rate, until a discount or a heavy box moves the cost to you. Here is the math on what you keep.

October 17, 2026Read →
Hands holding a phone to photograph a green blazer, striped knit top and denim shorts laid flat on a white sheet

How to Sell on Poshmark and Track Your Profit

Learn how to sell on Poshmark from first listing to payout, and see what fees, offers and shipping discounts do to the profit you keep.

October 10, 2026Read →
An empty rope hammock tied between two palm trees on a white sand beach, with turquoise water behind it

How Much Can You Make Reselling? Work Backward from a Goal

Skip the big income claims. Pick a monthly profit goal and work backward to the items, hours and cash it really takes.

October 3, 2026Read →
A vintage portable typewriter in an open case on a wooden chair at an outdoor flea market, with a stop sign, a wooden tennis racket, and tables of secondhand goods behind it

How to Track Reseller Inventory and Profit

Revenue isn't profit. Learn a simple inventory system that records what each item cost, what it sold for, and what you actually kept.

September 25, 2026Read →
A shopper in a pink sweater pulls an orange paperback from a crowded used-book table, with stacks of hardcovers and a calculator on the shelf behind

Book Flipping: Check Profit Before You Buy

A $20 book can leave you less than $12 after eBay fees and postage. Here's how to work backward to a buy price that still hits your margin.

September 19, 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

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 →
Hands holding a vintage wooden folding ruler over a flea market table covered in coins, medals and small collectibles

Reseller Profit Margin vs ROI: Know the Difference

Profit margin and ROI answer different questions. Learn both formulas, see them on real eBay math, and set a margin goal that survives fees.

August 29, 2026Read →

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