They don't sell too many Glocks in Maryland now

If you are going to get a gun you have to jump through the hoops to get a MD Handgun qualification license.  Forms, picture, fingerprints, training.  $100-300, depending. 

After doing all that you are gonna settle for a $500 gun? 

According to the gunstore, those that bother go ahead and pop for something fancier.  Read:  more expensive.  So Sig and HK are winners here in my home state.

That's not to say people have stopped buying quality $500 firearms.  It's just less incentive.