User blog comment:Beboper/Ultra Rare Price Guide Update/@comment-5637805-20121122063049/@comment-5428123-20121125061921

I could definitely add a column for pricing date if that is something people would be in favor of. It shouldn't be too hard to make room for it.

I was planning a system where prices would be updated on a weekly basis, but perhaps updating indiviudal prices and having a date indicator beside it would make more sense, and might save some work in the long run.