Well I wouldn't had lied about it, fortunately I have a very understanding husband. But if it were a higher priced item than I wanted to pay but got it anyway, I would have still told him. Anger only lasts for a time and remind him that it was Your money...sometimes a woman has to have some mad money of her own and you just spent yours!
Tell him dear, it's the right thing and you'll feel better And he'll respect you more for your honesty.