The Lesco Renovator is made by Lesco or one of it's subs. Lesco has been making this seeder for years.
the Classen unit was made by Classen Mfg. in Norfolk, Ne but has been sold to Shiller Piffer, back east.
The Classen compares closely to the Bluebird as they are both dethatchers that have had seeder boxes added to them. The tines pull the units along. Both units have small narrow wheels that do not work well on rough turf such as thin fescue
The Lesco is a true seeder and is wheel driven with larger pneumatic tires. this accounts for the much higher price.
Turfco makes one like the Lesco with big wheels but is driven by the tines like the classen and bluebird. Also is was designed to be a seeder from the start.
The 2000 price on the Lesco seems low from what I have seen.
Sure bout that? Seems to me I remember the back wheels pushing the unit along.....
The self-propelled model TSS-20 turf seeder from Classen Manufacturing, Norfolk, Neb., has a hydrostatic drive system that allows the unit to operate both forward and backward at up to 3.4 mph for more consistent seed placement.