Ditto to both of the above. Onmilo nailed it. Many shops and almost all of the Bog Box outfits around here don't routinely carry the little Browning because of the relatively high retail price. While they will draw a lot of "lookers" because of their petite size, elegant lines and beautiful finish, not many of your average weekend plinkers will plunk down close to $400 for one when they can buy one of the Ruger, Marlin, or other high quality .22 selfloaders in the rack for half the price or less.
Most of them are willing to order one for you, but be prepared to be asked to prepay or leave a substantial deposit (sometimes with all or part of it nonrefundable) before they will do so. Nothing personal. They're shelling out real cash for it, and shouldn't be expected to be willing to swallow the expense for something they wouldn't normally stock if you "change your mind".