On the high end I'd say 4,000 but should be able to get 3,500 out of it. If people look at a stock one for 2500 and plan on modding it try could obviously see yours is worth a 1k more at least.
No one has had a problem with one of his transmissions yet. Your opinion is all good and well but there is no reason for me to believe I should go to redline instead of Cameron. Especially if he's much closer.
I don't know what your personal beef with him is but he's a cool guy and his stuff always runs very well.