After a lot of looking, questioning whether I really needed an attachment I won't use that often, and debate about renting versus purchasing a tiller I bought a KK 72" tiller on EBay for $1200.00 today. Going away it was the best price I could find on this tiller in my area.

The seller claims it's "like new" and looking at his store it seems that he must have picked up a bunch of units from a dealer going out of business.

I'll pick it up one day this week and let everyone know if "like new" really is.