My brother has been doing it for years. Your best bet is to flip them as is. Spend 30 mins or so assessing the saw (compression, spark, does it fire, etc) and toss it on ebay. Any Husky or Stihl will sell, but others sell as well. Don't bother buying Poulan, McCulloch, or Homelite unless you know it's a desirable model. The biggest key is having access to a steady supply of low cost saws. Put an an on Craigslist and see what people have close to you. I've flipped saw. I bought 7 or 8 this winter. I've already made money have have several good saws left over, including a husky 261, two 2100s, a 66, and a 395xp.