It’s normally too late if you need to read the terms and conditions. However, that didn’t stop you from agreeing to them in the first place.

“The big print giveth, the small print taketh away.” ~Tom Waits.
Great value. Yes, it’s 50% off the price we increased it to yesterday.
Sale. Everything you don’t need at prices you can afford.
Closing down sale. This is the last closing down sale we’re having this year.
The best quote on this topic is.
“People who act in haste will repent at their leisure.” ~Anon
Always read the small print, your wallet will thank you.