Looking to revive and reuse some large garden grow boxes after several years of not being used. Interested in getting a small tiller cultivator to mix in fertilizer, manure, etc. Earth will be stone free but may be hard at times. Want an electric tiller/cultivator, either corded or battery powered that has a till depth of at least 6". Years ago had a gasoline powered one and don't want to repeat those problems again. Any recommendations? Want to keep the price under $200. This is for AZ (another reason for the grow boxes). TIA.

SV Coug