Your animals will let you know when it is a good time to breed. Are your girls ovulating? If so, then I don't see why not as long as you have all the equipment ready to take care of the eggs and new babies. Good Luck!
I won't know for sure till my first show at the end of August, but I'd assume that the lower end geckos would still sell since people need entertainment and escape and geckos are a lot cheaper than fancy electronic toys.
It seems like the shows in our area are still doing well. I have sold my last 6 HTCT from last season within the last 2 months. I think that the people that really love geckos will buy till they REALLY can't afford to buy. I will admit that I cut alot of other things ( non-essential things) out of the budget to support my reptile habit.