Easy StoreKit iOS v Prime31 StoreKit

Does anyone have any experience using these 2 plugins for In-App purchase support. One is vastly cheaper than the other but do they both do the same thing?
I like the idea of Easy StoreKit being in extensible code but I know Prime31 plugins are always robust and supported.
Any other reason to go with one over the other?

On this regard, We want to add one more plugin to your choice, which we developed recently. Hope you find it useful while selecting. Its Cross Platform Native Plugins.

This plugin supports In-app purchases along with lots more features which are commonly used. There are other versions for specific platform too (for iOS and Android). All functionalities use unified API’s.

We’ve used the StoreKit iOS plugin on about 10 projects and I can’t recall any problems.