their main function is to supply your LHS with kits, they have many brands of kits at wholesale in the many genres we need, both the original kits in original company boxes and some of their own reboxings
I use their site as a guide to what my LHS guy can get, and to over estimate what he will charge for each item,,,,,,,,they list an MSRP, and he does not charge that high
there is a slight issue with what is in stock, sometimes,,,,,,,but, if you are waiting for a kit at the LHS, you just keep checking at Steven's, and when it shows up, the LHS can order it, and mine charges less than the Steven's retail price
that is how I got the Skyhawks from a US supplier,,,,,,I ordered from Hannants, saw the stock was dwindling there, and when they didn't have any more, the container had hit the US, when Steven's listed them, I called my LHS guy