What is a typical markup on coroplast signs?

There is no single number. Many shops double or triple their cost, but your markup should be set on total cost (material, ink and labor), not on material alone. See how to mark up materials.

Should I charge a minimum for one yard sign?

Yes. One sign carries nearly the same setup and handling as several. Shops on Signs101 describe minimums from about $25 to $125 for small work, higher when installed.

Should I add stakes into the sign price?

Price them as an option, so the customer sees them and you don't forget them. In a Price Book, an H-stake is an each-priced option on the Product.

Does Grommetbook give quantity discounts on coroplast?

Not automatically. Pricing is linear in v1, with no quantity-break grid. You can set a per-line discount on a Quote.

How to price coroplast yard signs

Published November 4, 2026 · Updated November 4, 2026

Price a coroplast yard sign from your own costs: sheet cost per square foot × square feet, plus waste, plus ink, plus print and cut time at your hourly rate, then add markup and check it against a minimum. A 24×36 in sign is 6 sq ft. With the example costs below it costs about $12.71 to make and sells for $25.43 at a 100% markup, or $35 for one sign once a minimum applies. It depends on your sheet price, printer speed and local market, so swap in your own numbers.

The formula

Square feet = width (in) × height (in) ÷ 144.
Material = sq ft × sheet cost per sq ft × (1 + waste %).
Ink = sq ft × ink cost per sq ft.
Labor = print time × printer rate, plus cut and pack time × shop rate.
Cost = material + ink + labor + any options (stakes, grommets).
Price = cost × (1 + markup %).
If the price is below your minimum, charge the minimum.

Worked example: one 24×36 in coroplast sign

All costs here are example numbers, not supplier quotes. The ink figure is in line with what one Signs101 member said they use (about $0.25/sq ft, 2022).

Step	Working	Amount
Size	24 in × 36 in ÷ 144	6 sq ft
Sheet cost per sq ft	Example 4×8 ft (32 sq ft) 4 mm sheet at $18.00 ÷ 32	$0.5625/sq ft
Material with waste	6 × $0.5625 × (1 + 15% waste)	$3.88
Ink	6 × $0.25/sq ft (example)	$1.50
Print time	6 minutes (0.1 h) × $40/h printer rate (example)	$4.00
Cut and pack	4 minutes × $50/h shop rate (example)	$3.33
Cost	$3.88 + $1.50 + $4.00 + $3.33	$12.71
Markup	$12.71 × 100% (example)	+ $12.71
Price before minimum	$12.71 × 2	$25.43
Minimum	Example line minimum $35.00	applies
Price for 1 sign		$35.00

Totals are rounded to the cent at the end, so a sum of rounded rows can be a cent off.

The same sign, ten of them

Step	Working	Amount
Cost	$12.7146 × 10	$127.15
Price	$127.15 × (1 + 100%)	$254.29
Minimum	$254.29 is above $35.00	not applied
Each	$254.29 ÷ 10	≈ $25.43

In real runs, setup time does not grow with each sign, so big orders often cost less per sign to make. If you give volume prices, decide them on purpose. Don't just knock a number off.

Things shops forget

Waste. Misprints, offcuts and the strip you lose when sizes don't nest on a 4×8 sheet.
Labor. In the example, labor is more than half the cost. Pricing from material alone undercharges small signs.
Stakes and grommets. Price them as options so they show on the quote.
Price rises. Coroplast and vinyl go up. A Signs101 member reported coro rising 8 to 10% in 2018. Update the sheet cost when it does.
A minimum. One sign still needs a file check, a print setup and a customer call.

Doing it in Grommetbook

In Grommetbook the example is a Price Book: the coroplast sheet and ink are Materials (the sheet with 15% waste), the printer and shop time are Rates, and "Coroplast yard sign" is a per-sq-ft Product with a 100% markup, a $35 minimum and an H-stake option. Ask your AI assistant "price a 24×36 coroplast sign" and price_product returns each step above, so you can check it. When your supplier raises coroplast 8%, say so, and reprice_materials reprices every Product that uses it. Quotes you already sent don't change.

What you give up: there is no standalone price calculator and no quantity-break grid in v1.

Try it

Connect your AI assistant to https://grommetbook.smallwright.com/mcp and give it your own sheet cost, waste, rates and minimum. Steps are on Connect your AI.

Questions

What is a typical markup on coroplast signs?: There is no single number. Many shops double or triple their cost, but your markup should be set on total cost (material, ink and labor), not on material alone. See how to mark up materials.
Should I charge a minimum for one yard sign?: Yes. One sign carries nearly the same setup and handling as several. Shops on Signs101 describe minimums from about $25 to $125 for small work, higher when installed.
Should I add stakes into the sign price?: Price them as an option, so the customer sees them and you don't forget them. In a Price Book, an H-stake is an each-priced option on the Product.
Does Grommetbook give quantity discounts on coroplast?: Not automatically. Pricing is linear in v1, with no quantity-break grid. You can set a per-line discount on a Quote.