Online retailers like REI and Backcountry carry loads of skis, as well as all the orientational information you’d need to assure that the ski you buy matches your weight and skill-set. But be sure to pay attention to whether or not the skis come with mounted bindings. If they don’t, that’s a separate product to purchase, and the mounting of those bindings should be handled by a ski shop. So there is some value in exploring the inventories and services of a few brick-and-mortar retailers.