The females owner normally goes to the male....the male should have breed specific health clearances at the VERY LEAST if she is a reputable breeder. It is purely for her convenience that you would be taking or leaving your male with her for the breeding....and yes, that would be very convenient for her!!! If you don't have a problem with it, I don't see that it is a big deal - but just realize that this is for HER convenience and if he was breed worthy and others wanted to use him, you don't just leave your dog with whoever has a female in heat!
For a male with no health clearances, no show record or titles, $500 is a very generous stud fee IMO....
Csabre Sch1, Hexe Sch2, SG Bengal, Lynx, Komet, Kira HGH & Kougar v Wolfstraum ~ Ziberia IPO1 ~ ATB Basha, Kougar & Kyra, Fenja, Sch3s, Cito, Sch2, Danger RH & Alice Sch1s ~Kelsey