I am about to buy my first backpack blower and after reading threads I see that Echo has I beleive the 755 on ebay with free shipping? Is this a good deal? I'm not familiar with commercial grade prices. Also if I had problems in the future with it, would a dealer even look at it since I bought it off ebay? I'm partime with 10 accounts max and figured it would last me a long time but don't know if I should go with a dealer. Any help would be appreciated. Thanks.