Thank you all for the advice.

However, a slight misunderstanding arose between me and the seller. He thought that i had no experience with serpents before, and was thinking i was referring to 'bitey' as to compared to cats' docileness
Problem solved! the snake is a well behaved one. However, there seems to be a little bit of peeled scale/skin on his head and i was wondering if anyone had this experience with retics before?
The snake is not purchased yet, so pictures will not be available. Its like a white/grey 'dot' on his head, due to the missing scale/skin i presume, but the scaleless patch is small.
I wonder if it will heal with time or the snake will be scarred for life? and maybe its caused by a bad shed?

Advice and tips are welcome!