For new customers only, Checks Unlimited is offering checks for $4.95 per box for singles or $5.95 per box for duplicates when you enter the coupon code R66Q at checkout. This includes free standard shipping, but a $1.95 handling fee is added per box. If you're a returning customer, the best code to use is 355M for $6.99 per box. There are over 100 types of checks to choose from, including Harley-Davidson, Looney Tunes, and Disney characters. The code is good for up to four boxes per order. Sales tax is charged in most states.