What are some good websites that can sell me guitar bodies and necks of every guitar and not any paint on them?

I will be starting a small business in a year for selling guitars. It isn't like any other business I have ever seen on the internet. (at first it will start out as a website) I will be letting people go on my website and use tools on the website to make their own guitar whatever way they want it. They I give them a price and they pay me, then I go and make the guitar and send it to them. I just need to know a good website that can sell me any type of guitar body and neck for a good price. Also they have to have a lot of them so they won't run out because I will be buying a lot of guitar pieces. Also, with the business I won't be overpricing the guitars. I will charge them exactly how much money it cost to make it and $100 extra (so I don't lose money).