Thanks for the helpful comments. I figured that he was booked solid, and am heartened to hear that he sometimes takes a little time to respond. I'll follow up again (and I'm always polite) and think that one possible piece of feedback is for his Paypal to send a confirmation e-mail that the payment has been received, and the order is in the qeue.
Thanks again, and I look forward to FINALLY having some proper amplification for my K701's
