Somewhere between 10k and 25k depending on year/spec/condition. I'm thinking the highway one will be 10-12k, Standard around 12-15k and Deluxe 18k+. Custom shop and signature models will vary.
Bothners had their November sale and new US strats were 19k - which was pretty good price for new locally.
ATM, I think there's a dip in demand, so a wanted ad on one of the facebook trading groups will get you a nice selection of really nice cond guitars to choose form.
Happy hunting!