A $25 certificate at Restaurant.com is usually $25. With coupon code BONUS! they are just $2 each. I'm not sure if the ! is needed, so try it both ways. The code expires Jan. 31 at 11:59 p.m. PST.
Note, when you use a gift certificate at Restaurant.com there are many redemption rules, including minimum purchase amounts, exclusions of alcohol, tax, and tip, and sometimes days or times the certificates can or cannot be used. Make sure to read the rules first.