Interestingly, I was just thinking a couple of days ago that I've given more money to one seller than any of about a dozen that I've ordered from. I've gotten many of my pricier daylilies from Michael Miller (Small World). Pretty sure I also owe him my firstborn.
I've spent more on the Lily Auction, but that's been spread out over several different sellers. If you haven't made an account there, I highly recommend it; you can get some great buys there and save money on your most wanted.