Well I wanted to take on this deal but its not that he bought a new set of tires/wheels already he is trying to sell these so he can buy the others which is sort of like selling somthing you dont have in my opinion.
Let me know what happens because I will still offer you a bit higher for the full set but you realize all this is considered used and you wont get no $1500 which I think you realize is a bit over the top.
Yeah look around most wheels are going for $400.-$500. and used tires are worth maybe another $400. so probably $1000. tops for a set. $1500 is very optomistic but you never know what some people will pay. Good luck.