Before you get all excited, this is not a sale. If you are in a blackjack game where you are wagering $20 per hand and an insurance wager costs you $10, this does not mean that for a limited time insurance will only cost $3. Sorry, if casinos are going to try to hang on to their house edge they are not about to put a sale on insurance.
When I say 70% off of insurance I am talking about the odds of a dealer