The best $50 gift certificate is a fifty dollar bill. It's universal. I wouldn't offer less than that if I knocked on their door. I'd probably go to $100 or 2 maybe 3 for a good one, if they seemed indecisive . Funny Weber can produce a finish with a perfect little circle with an R in it, written in the porcelain. But all they produce is solids( Except for logos). The fades would sell. Wish they would open up a custom shop like Fender. Might be a nice job promotion for a dedicated employee. Haha, I can see it now pre-worn new kettles.