Costco and Chevy Trax - Good deal?

I'm looking for a Chevy Trax. A dealer who got my info via Costco Auto contacted me, and basically said they can offer $1500 off of MSRP. I made sure there would be no dealer additions, so besides confirming the doc fee (it's in WA state, so should be around $200) I don't think there's any other way they can fudge on the price. Am I missing something?