What is a product or service that would never sell in the area where you currently live? Fur-lined parkas would decompose on the shelves here.

Donald Trump/Anti-Obama swag wouldn't sell well here.

http://projects.fivethirtyeight.com/2016-election-forecast/hawaii/

Summer clothes

Snow chains and snow scrapers for cars. You'd think boats would be on the list, too, but people buy them. Try finding snow pants or ear muffs though, ha! I've never seen a solar cover on a pool out here either. 

Beach blankets, palm trees and liberal periodicals. :-)

Cosmetic surgery or artificial bodily enhancement.

Contradictory, but it is considered both ugly and vain.

"Lawn Mowers"

Surfboards

Prophylactics.

Ohhhh Yaaaaa!!!!!!!!!!!!!!!!!  Whoa!!!!!!!!!!!!!!!!!!

JS, bummer!

Yak butter.

OOOOO, wish I was there and not here.  :   ) 

Books that require an education to read. 

Establishments which cater to the prurient interests do not bode well in this area.

   Dahlink...........  : )