There is no other way to shop for a holster than online. With the hundreds of popular guns, with right-handed, left-handed, and all the other possible configurations, there's no way a local store could stock enough to satisfy everybody. They would literally have to stock thousands and thousands of holsters. There are several reputable online holster makers that offer trial periods where if you aren't satisfied you return it for a full refund. There's no getting ripped off if you shop properly.
Your Mileage Obviously Varies