Please let me know if you think I should make this business my family member runs into a business that accepts Bitcoin!
Why not? What does he/she have to lose by accepting bitcoin?
I won't be buying anything anytime soon, as currently I've got loads of other expenses, but I like the website and the prices seem pretty reasonable (not sure what are the delivery costs).
Accepting bitcoin itself won't instantly drive a masses of new buyers. But it can work out quite good if you create a dedicated thread in a marketplace section (regularly updated with new items, discounts etc) + be active on reddit.
Another thing - offer small discount for paying with BTC. Just share your lower fees savings with the customers, that always leaves a good impression. And participate in events such as Bitcoin Black Friday.
Good luck!