I don't know any shops for telescope but if it helps home made telescopes are satisfying. If u can get two magnifying glasses (the objective lens must be convex and the eyepiece can be either concave or convex, the problem is both lenses being convex makes the target object image inverted.), u can make fixed type telescope (constant focus). Just put the eyepiece right next to ur eye and the objective lens next to the eyepiece then lock ur position to a bright star ( avoid light pollution in ur vicinity), move ur objective lens in and out to find the best resolution. If u satisfied, get someone's help to measure the width and fix the lenses in position. Believe it's easy and satisfying. The best thing is u'll know more about astronomical stuffs starting with ur own telescope. I'm not against commercial telescope though and good luck with either of those. And make it happen