I quit telling my husband about my purchases a long time ago. When something comes in and he asks about it, I say "You don't want to know" and he now says "You are right". We are both adult enough to know if there is money available for a purchase. I just happen to spend and he does not. I would tell him when the item arrives what you actually paid and that you were mistaken about the bid. After that, I would not lie again. The best is to get it off your conscience and enjoy your new toy! Good luck.