just bought an aerator on ebay. It is a Bluebird 424 and is one good piece of machinery. Its about 2 yrs old, its has some scratches but the engine is super clean. It runs like a million bucks. I avoided the shipping cost so i drove the two and a half hours to pick it up and it was well worth it. I really don't like buying used equip. but i couldn't pass it up. I was especialy nervous about buying it off ebay, but it was everything the description said it would be. The best thing about it, it only cost $700, I could make that back with one 6-7 hour day doing 7-8 aerations.