On Wednesday, December 7, 2016 at 6:54:53 PM UTC-5, Thor wrote:
I'm looking at buying a ASW 27. The ASW 27 are usually 15k less than a ASW 27B, WHY?
Does the ASW 27B have an performance advantage over a ASW 27?

The B has wet wings which are a little more convenient to fill and may hold a few gallons more.Almost all have newer winglets, either by production, or retrofit.
Pricing has little to do with B or otherwise, and is mostly driven by condition and equipment. All other issues being equal, an early 27, with excellent finish condition, can easily be worth more than a B in poorer condition.
There is no difference in performance as they are geometrically the same.
Good luck
UH