Hi. The situation I've gotten into is a really bizzarre one and exactly how everything happened is a bit complex, but basically this is the story: I own a 35-105mm 1:3.5-4.5 Canon EF lens for a Canon EOS 650 body. Recently, it was accidentily dropped. The body is fine but the lens' coupling(? I think) that allows for the lens to zoom in and out has been damaged. I've been trying to replace the lens and somehow got into a situation where my dad was misguidely encouraged by a shady salesman to purchase a Sigma 28-200mm 1:3.8-3.6 UC used lens for $200 CAD. I personally hate the lens and find it a real inconvience for what I want the lens to do. I tried to go back to get a refund, but the salesman kept on saying how he was giving us a good deal on a good lens. I came away quite angry, feeling like it was a dishonest man giving false information to get a sale. The seller's main points on selling the lens were: 1) The sigma has a far superior glass than the original canon lens that I have and will definetly outperform the canon lens Is it true? It seems doubtful that a third party consumer lens can outperform a consumer level canon lens. 2) The sigma's lens body was much sturdier than my canon lens which he said was made of cheap plastic parts Ironically, I never had a complaint about the canon, but now that I own this sigma lens, I've come to hate it's very cheap feeling plastic body esp. at 200mm. It doesnt zoom in and out very smoothly either 3) The sigma can be used on a digital rebel, but the canon lens I own cannot Is this true? I thought the digital rebel could take any EF lens. 4) The sigma has more range. more range = better lens. I'm not looking for a large range (esp. don't need too much on the telephoto end). The quality of the image is more important. 5) The aspherical element in the lens allowed it be used on a digital camera body from what i know, that isn't the purpose of having an aspherical lens, right? 6) This lens costs $400 CAD at Futureshop, but he would sell it at $200CAD On Adorama, the brand new, upgraded version of this lens, Sigma 28-200mm F3.5-5.6 Compact Aspherical Hyperzoom AutoFocus Macro Lens with Hood for Canon EOS Cameras, is going for $185 USD. Prior to selling this to us, he said that he was going to give us a brand new, canon brand lens, but when my dad went to get it, he came back with a sigma minus front or rear caps. The seller also said he couldn't give us a refund because he had ordered that lens specifically for us. We had never asked him to order this lens, rather he had said to us that he had it available (and at the time I thought he meant the Canon EF 28-105 f/ 3.5-4.5 which I want). I suppose the main question is, was any of what that man saying the truth? And is a used lens like this even worth $200 CAD? Maybe I've answered my own questions, but it felt good to rant.