Do you buy your domains on a per year basis or do you buy them for longer term?

What if the registrar is having a sale example $10 for 3 years .com? do you buy for longer term or do you still just pay on a per year basis?
The90sKid Reviewed by The90sKid on . How long do you buy your domains for? Do you buy your domains on a per year basis or do you buy them for longer term? What if the registrar is having a sale example $10 for 3 years .com? do you buy for longer term or do you still just pay on a per year basis? Rating: 5