I don't see $170 for 117 razors as making any profit and do not feel you should refund the money just to 'keep the spirit of the forum", as noble an act it is.. I also feel that all others reading this post should comment on this act as your feelings dictate.
I agree with Joed and Bart 100% Ron. Your offer was well within the spirit of the forum and you don't owe anyone a refund.