I'd stick with Oregon for the sales tax break...

I noticed BS at the places I was looking has gone up a bit in the past month or two, but the 2 shops I've checked out locally (SF area) seem to have the exact same price, so I'm surprised you're getting different prices on BS at least since they seen to be fixed around here. I wonder if they're quoting you the exact same models.

For reference, I'm linking to a SF area shop that lists prices so you can compare to what they run around here (not an endorsement--haven't used them for anything more than pricing!). Good luck!

Here is a link that might be useful: comparison pricing

Be sure they are configured the same when you compare prices. BlueStar will apparently configure a cooktop any way you want it, and that can greatly change the pricing. I was pricing out a 60" cooktop with 6 burners and the large griddle. One price was over $7000. Another was closer to $5000. Apparently the more expensive model included the broiler. We didn't want that part, anyway, so we are planning on the model without the broiler.