Yeah I have to admit these flash sales catch people out ocassionally.

I have heard of people filling there cart and then thinking I want some hair to go with this new suit and then browsing the store for a bit and returning to cart and sale over back to original prices.

I guess the Business ideaology behind it is that you will push the button now rather than risk waiting to later and losing out. 

But the offside is that its quite frustrating to miss something when your right on the cusp.

Hopefully its back on sale soon for you.