Didn't buy the shirt though - I actually started to bargain just for fun and kind of liked it... Weird.
Most male salespeople in the area run the handshake trick (con?) to get you into their boutique. Basically they try to shake your hand while asking where you're from. It's seems polite at first, it's after all just a normal handshake isn't it, but when the salesman won't release the grip and instead tries to pull you into the boutique the similarity with the normal greeting procedure is no longer apparent.
Tip: Place something (e.g. a camera) in the right hand. That way a salesman will have a harder time to run the trick as long as you avoid initiating handshakes with the left hand.