I’ve never really been big on coupons. If I see a retail website with a promo code or coupon code box, I will try to find a good coupon or discount code to use, but I don’t really do that with domain names. Many registrars have stopped giving out coupons and promo codes, so it can be tough to find a decent code to use.
Personally, I wouldn’t use a coupon code at a registrar I wouldn’t ordinarily use just to save a few dollars. Yes, domain registrars offer essentially the same service. However, I like the security and account management tools at my preferred registrars.
Do you try to use coupons when you register domain names?