The wordpress one was ok, it just was so limited and not easily customisable.
The script we bought was the basic package from here
It was easy to customise, and if you know php code you should be able to do this fairly easily, one downfall was they have encrypted the model files, although we havnt had to actually enter these files yet.
Should you have the need you could just have someone decrypt them, its built for ioncube with codeignitor files.
If you see the demo, and then our site you can see we actually made some major changes, and it was fairly easy to do, make sure they give you the upgraded version of codeignitor files when you purchase, then add them to skype so if you have any trouble you have live help.
We had several bugs, as we were the first trial of the upgraded version, the cron jobs were not running properly, the projects were not switching to sucessfull because the cron job was not returning the info, all our other problems were more little annoyances and we just fixed them ourselves.
As to our launch date, as we are web development company, we actually customised and edited this script for a client, as the paypal adaptive feature requires verified paypal and an app to run he is waiting for paypal to finish and send the info before we launch, you could ofcourse just use the built in wallet feature and launch straight away but my client chose to wait until paypal had done its thing, should only be a week or so now.
All in all i can reccomend this script , They charge $100 for sencond licenses and $ 20.00 per hour for paid customisations, but if you know php you should be able to work this out fairly easily and do the work yourself.
If you decide to go with this script or another send us a link id be intersted to see what you managed to do with it, we will be adding many more features like geotagging and featured users and such in the next little while.