G'day,

The short answer is yes. No need to reinvent the wheel again.
Most likely the underlying fabric is focused towards the mechanism for advertising and selling generic products but you tailored those products into something specific.

Keep the same mechanics just change the design and repopulate the products with the new ones you wish to sell.
The great thing with code, especially if you are talking about a similar marketplace model, it can be repurposed to suit your new needs.
Definitely, don't pay again to have it all recreated from scratch!

Cheers,
Dr.Nick