Saurik has announced that it is now possible to return any tweak that has been purchased in Cydia, but that if, for this we must meet certain requirements.
Apparently, to make use of this function is as simple how to uninstall the tweak before within 24 hours, which will recover the investment should not be satisfied with its performance.
Cydia now allows self-service refunds within one day of purchase if the package has been uninstalled; also: the Store is now up for 9.2/9.3.— Jay Freeman (saurik) (@saurik) August 2, 2016
In addition, it is now possible to buy tweaks in iOS 9.3.3 iOS-9.2, a feature that remained disabled due to incompatibility of most of them.
In short, Saurik surprises us with a very large feature that surely will make many users decide to take the step to try some tweak that previously would not.