I don't dry clean, or iron either ! I'll use 10% off. For example grocery stores often offer 10% off $50 or $100 in the form of a coupon mailed as a postcard. I'll bring it with me and use it.
The rebate shit gets to be too much effort. Get a $2 tube off toothpaste free with $1.99 rebate, I'll pass.
I did get all my rebates from laptop ( about $250), but it took a few hours to fill out all the forms, double-check them, make copies, mail the forms, mail the checks to credit union, etc. I rarely go to bank, credit union to deposit, I just mail it.