How to set up unlockable Prefabs?

Ok I've looked for hours on how to do this and haven't been able to find anything so here I am. I'm wanting to set up a store to buy things in my mobile game. I have the currency "Coins" set up in a playerpref already. But i'm confused on how to set up an actual store. I'm imagining something like crossy road where there's options to buy, but instead of IAP they're bought with the coins.

How would I set up the list to set up the ability to purchase these items, and then how do i insansiate them into my game?

This might be a simple question but I'm lost. Thank you!