Developer Required urgent

Hello Freelancers, I Need a website designed for buying and selling stuff. User should be able to create his own profile. Website requires integration with dropbox, box(dot)net or any other cloud based system. Creating an online Payment option must be integrated in the website. Design should nNot much complexity involved and should be pretty straight forward, I am sure you must be having the backend ready for this site. The folder contains code for dropbox [login to view URL] link has some relevant info ([login to view URL]). The live demo can be seen here ([login to view URL]). Make sure pop ups are not blocked. For the dropbox int to work, your server should support oauth. Please see attached details. work accordingly. I suppose you will maintain confidentiality of the details provided to you (please let me know if otherwise).I hope we dont need to sign an NDA. I will make milestone the day you start working. If you start today itself ill make milestone today. MY BUDGET IS $200 and need to complete the job in 15days Max. Thanks & Regards, Arjun Kumar