Hi, I'm Steph B. I've owned pop-ups in the past, and plan to purchase a new one in the very new future. I'm very knowledgeable about them, and highly recommend them to any camping enthusiasts who wants to move up from tent camping, but wants to get off the ground. My question is this; in my search for the right camper, I found that many dealerships that previously carried pop ups no longer do so. And the ones that still sell them, don't sell high walls. Does anyone know why? I'm in central Ohio.