Matte Poster 18×24″ Amazon Profit Calculator

Amazon charges a flat 15% referral fee on the Matte Poster 18×24″ — it sits outside the tiered Clothing & Accessories category — applied to item price plus shipping, with a $0.30 minimum. Right now Printful fulfills the 18×24 poster for $5.50 + $4.99 shipping, and Printify from $4.73 + $7.49; most sellers list it between $19.99 and $29.99.

At a $24.99 price with free shipping and Printful fulfillment, that's $3.75 in Amazon fees, leaving $10.75 profit per sale — a 43.0% margin, or roughly 94 sales to clear $1,000 in profit. For the Matte Poster 18×24″, Printful is the more profitable fulfiller on Amazon — about $1.73 more per sale at $24.99 (all-in cost $10.49 on Printful vs $12.22 on Printify). Breakeven — the price where profit hits $0 — is $12.34 on Printful; sell below that and you're paying to make the sale.

Amazon's 15% referral has a $0.30 floor, so very low-priced items lose a disproportionate share — keep that in mind if you sell the 18×24 poster cheaply.