I'd probably rate this better if it was built with a stronger architecture. For example this is built with pure PHP and a lot of include files which is a bit older way of doing things. Very complicated to be able to update. A true MVC approach would be better from this script. Also there were some security issues like very low validation (example XSS).
I think this is a good start to a great idea and script for the future.
The price is a bit too high as there are a lot of things missing and customizing takes basically a rewrite.
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