Sales tax on new car purchase?

Hello!

I just recently bought a brand new car (today), and was inspecting all of paperwork once I got home when I noticed there is a charge that I missed during signing for sales tax - is this normal? I’m an Oregon resident and purchased the car in Oregon, so I’m not sure what I’m paying sales tax for. One line says SALES TAX ESTIMATE within the itemization of purchase, and then one of the following pages regarding financing has the cash price listed including ‘X’ SALES TAX. Not sure if this is a situation where I’d get those funds back when I file taxes, or I just let myself get duped.

I’m really beating myself up for not catching it sooner. It isn’t a ridiculous amount, but nonetheless, if this was a mistake I’d like to know ASAP so I can contact the dealer and have it corrected. Any advice would be much appreciated.