Oleg, consider yourself lucky that you have camera stores to go to.
Here in Milwaukee, the two stores that catered to professionals closed down about 5+ years ago. One, Reimers Photo Materials, had been in business longer than Kodak. The other, Helix, was a satellite store for the Chicago Helix Photo stores.
All that's left are amateur places. If I need to rent equipment, it has to be shipped up from Calumet Photo. Same with any professional-level purchases.