Are you talking about bonus offers for cashing out in a particular manner?
Or are you talking about 'better rebate offers' for individual products?
There was someone of Facebook who cashes out at every $1000, not before. Honestly, that's a lot of money hanging around in limbo, and for many of us, certainly myself, that would happen after a number of years. I usually cash out when it's $50 and over, but see alot of people cashing out at every $20. The rebates and bonuses seem to have no correlation to how much you have waiting for a cash out.
There is no advantage to saving up your money in Ibotta once you have reached the $20 cash out amount. While there are those that do use ibotta like a savings account and will say that they have been doing it for years without any problem, they are risking money they have earned because it isn't really theirs until they cash out. Many people have lost money due to lockout, deactivation, breaking the rules. It isn't worth it. Cash out to paypal or a giftcard as soon as you hit $20 and you don't have to worry about losing it.