I think the price of gift cards might come down as the INK conversion gets closer (Feb 28) because so many people are listing them. Me included.
I have a neat little trick you might want to try. Once you get a few watchers on your listing, lower the GIN price a little. All of those watchers will get a notification that you've lowered the price. Someone MIGHT pull the trigger ... if not, lower the price again later or the next day.
I'm doing that and having fun with it!
BEST of luck piling up those credits before the Ink conversion! I am SO excited about it, I think it will be a GREAT thing for Listia!