Stromer tires and tubes are excellent. Doubt your local shop will have the same quality. Order a set on line so u have them ready
Stromer buys Schwalbe tires to put on their bikes, which, after researching, is the same brand that I bought for my Haibike (I got the Marathon Plus). The Denver area has a number of bike shops that carry this brand, so you can probably find them where you are, but not at every shop! For example, stores with Trek mostly carry their own brand, Bontrager (whose Hardcase line also offers good flat resistance by the way).