Has anyone purchases used tools on e-bay before from sellers like these guys? http://stores.ebay.com/Jewels-and-Tools-697 They seem to get good feedback, but where are they getting their used trimmers/blowers? Would you purchase them in my situation? I'm only going to be mowing for 5 more months before I go to college, (I have about 18 clients) but I'd really like to replace my homeowner stuff with something commercial grade - but I'd rather not spend over $600 on something I'll only use for 5 months. Opinions?