We got a hamster from Pets at Home at the beginning of Feb. While DD was choosing one, I asked the salesman how old they were, how much they had been handled etc - they were 9 weeks old and had NEVER been handled. Not at all. 
Of course, by that time, DD had chosen one and named him. The salesman scooped him into the box without touching it.
10 weeks later and we still can't handle him. We've tried, we really have. I've had about 10 hamsters over the years (not including the totally unexpected litter of 5 from a "male hamster" we'd had for 2 weeks), so it's not like I'm a novice at small furry animals. He will just tolerate me putting my hand in his cage and touching his back - for about two seconds, then he turns and rears up and nips.
I am on the point of giving up. :(