Checks Unlimited discounts single checks to $6.99 per box and duplicate checks to $7.99 per box via coupon code "355M". Plus, the same coupon lets you choose a custom font for free. (It usually costs $2.50.). Better still, these orders also bag free shipping.

Note: Be sure to opt out of EZShield Fraud Protection and choose "Standard" shipping during checkout to see the above prices. If you're a first-time customer, use coupon code "2QNP" to knock the above prices to $5.50 and $6.50, respectively.