Yes, thanks to the person who originally posted the tip (in another thread, I forget which now).

I ordered directly from the Datavis site and selected overnight shipping, in hopes that I would be prioritized over the Buy.com orders. I was able to apply a $20 off coupon, so my shipping was essentially free. I will try to apply the rebate also, which will bring the price down lower than what NokiaUSA offered me (if they ever managed to resolve my ordering issues). But as it stands, I'm still paying about the same as if I went with Nokia--so I'm happy with that.

Oh, and I have the N900 package in my hands right now, so it looks like it worked out. (I just hope I don't have to return it, since their CS is reportedly terrible)