Dear LukeB,
I have gone through information provided and completely understood your requirement about re-installing OS Commerce online store. Already done such type of work.
Relevant Skills and Experience
If you want i can show you demo. Please check my portfolio to see how attractive all my works look like. I have very good feedback by client. Php, CI Responsiveness, E commerce and Woo commerce
Proposed Milestones
£15 GBP - 1st milestone with upfront
Bid amount can be decrease or increase as per work describe.