Can I grant 10% coupons on sales without a coupon code?

[MMD]

I am relatively new to this so bare with me, if this is a silly question....I opened a store on ETSY and want to give discounts/coupons to my customers....how do I apply them to their sale?!? Is there an easy way?!? 

Thanks

[akoehn]

Switch to Google Checkout.  It's easy, easy.