I messed up

I'm on a spree buying beds I don't have yet at the Marche, and a bed from a lucky bag popped up for 3000. I thought, 'Is this how much they usually go for?' and hesitated a bit before buying it. I was just visiting shops randomly, and then I happened to see that same bed for 670 at a shop three places down the line;; I'm about to cry!!!!!! Right, that's the lowest price, isn't it! It's only slightly more expensive than usual! So sad……