If I were in it for money I would pop his semen off to anyone. No. This guy is my farrier who just wanted two of his mares bred. So bad? Didn't think so.
Except what happens when every 4th horse owner "just wanted two of his mares bred?" That adds up real fast and you know what? That's why we're in the situation we're in with overpopulation.
His color is also nothing special. Tobiano and splash. You have not mentioned if he is positive for frame though. There are plenty of stallions with those same color genes that are both proven and actually well conformed for not much more then you received for the farrier's mares.
Also, just pointing out that you posted your stud's name on a public forum with your attitude along with it. If I found your ad on craigslist, I would most likely google his name to see if anything came up. Horse Forum threads are usually pretty high up in that list more often than not. If I was interested in a stud and saw this thread, I wouldn't come near either of you with a 10 foot stick.
And as someone your own age, you should probably check your maturity level.