Really Dissapointed. Unfinished $300 product

I downloaded the free version and it added a “Add Prescription” button. It worked right out of the box. Prescriptions would be showed a checkout very clearly. There was no customization from the free version, neither backend or frontend. It worked fine so I paid for the Pro version. To begin, the Pro version which costs $300 has no documentation what so ever. The php files have no comments, other than the template comments. Even the description in the Plugins list is the “Insert Short Description here” placeholder. The Pro version is ONLY Backend. So to customize the lens types and pricing you need to disable the free version, enable the pro version (it doesn’t show the “add prescription” button in the frontend). So once you edit the details you have to disable the pro version, and enable the free version. This feels really unfinished if you ask me. Lastly, the biggest issue that I didn’t even imagine would be a problem was the lack of support for variable products. Come on. 99% of glasses come in different colors or sizes! Am I supposed to make 12-20 different products for the same model!? Also, that 5 star review seems sketchy considering the only 3 reviews are for plugins from the same developer