Sharetribe code on personal server

Hi, I essentially need a marketplace set up from start to finish using open source code and with PayPal integration. I want to use the Open Source Sharetribe platform for the work (it's developed using Ruby on Rails). It's already fully coded and has a small community and several forks on Github. Here is the source: [login to view URL] There are also the complete instructions here: [login to view URL] While the hosted version ([login to view URL]) already offers payment integration, the Open Source version does not. So, I WILL need payment integration with PayPal so that sellers can get paid and buyers can buy using PayPal. Obviously, the site will need to have the ability to have sellers enter a shipping price or calculate shipping (which I believe the PayPal API already allows). I have some technology background, but don't want to be too involved in the technical side (not enough time); You'll need AT LEAST the following skills or experience: -HTML/CSS -Ruby on Rails -JS/JQuery -MySQL -PayPal API -Facebook (specifically Facebook Connect) Here are a few examples of sites already using the platform: -[login to view URL] -[login to view URL] Again, the source code is already there, essentially I just need it hooked up to a payment processor (PayPal) so I estimate no more than 3-4 hours to complete the job so around 40$. I'm looking to get this done at the best possible value. If the job is done well and at the right price I'll also likely get the same done for another bigger project. Looking forward for yours, Thank you.