Cost per envelope, line by line

The obvious costs

Start with materials: printable vinyl or paper, laminate, and ink or toner if you print in-house. A typical 5-sheet mailing on 4-mil printable vinyl with gloss laminate runs roughly $0.55 to $0.90 per sheet once you include ink coverage, which puts a five-sheet drop at $2.75 to $4.50 in raw sticker cost alone before anything else touches it.

Then add packaging: the mailer itself, any backing board, tissue or washi, and a thank-you card if you include one. Budget realistically, not optimistically — a rigid mailer alone is often $0.30 to $0.60, and card stock inserts add another $0.10 to $0.25 each.

The costs everyone forgets

Postage is the big one people underestimate, and it deserves its own lesson, but even a first-class flat envelope in the US typically runs $0.68 to $1.50 depending on weight and thickness. On top of that, payment processing fees quietly take 2.9% plus $0.30 per transaction on most platforms, which on a $16 charge is roughly $0.76 gone before you've printed anything.

Then there's your subscription platform's own cut if you use one, typically 1-3% of revenue, plus the cost of the labels you print and the tape you use. None of these show up on a materials receipt, but they come out of the same $16.

• Vinyl, laminate and ink per sheet
• Mailer, backing board, tissue and cards
• Postage, which changes with weight — see the next lesson
• Payment processing (roughly 3% + $0.30 per charge)
• Subscription platform fee (roughly 1-3%)
• Labels, tape and the ten minutes of labour per envelope

Building your own cost sheet

Put every line above into a simple spreadsheet with one column per envelope, and total it before you set a price. On a real example: $3.80 stickers, $0.90 packaging, $1.10 postage, $0.76 payment fees, $0.30 platform fee comes to $6.86 per envelope. If you're charging $16, that's $9.14 of margin before your own time — which sounds healthy until you remember it needs to cover design hours, customer service and the occasional lost package.

Revisit this sheet every time a supplier changes a price or postage rates rise, because a five-cent increase per sheet across 300 members is $15 a month quietly gone, and a postage rate change can be worse. Treat the cost sheet as a living document, not a one-time exercise.