Looking to get a website created for people to sell their old smartphones

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
Hi All

Im looking to get a website created that functions like http://buybackboss.com/ or http://www.yourenew.com/ but obviously not an exactly the same design wise

the site will need to A calculator to generate the phone prices for the smartphones like in the sites above ,let me know how you would do this ?
also what platform you will be using to create this site ?
tell me the full cost and time to complete ,

Please Read Carefully -Any bids without my questions being answered will be Ignored !!

Skills required:
Graphic Design, HTML, MySQL, PHP, Website Design
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