Location Transport - where can i find a company to transport my car from rhode island to Minnesota for $600 or less?

where can i find a company to transport my car from rhode island to Minnesota for $600 or less?

You can't set the rates for a car hauler, you just need to call them and try to talk them down. Other options, a truck with a dove tail and available space, but involves dealing with a broker to get it listed. Pay someone to drive it there. If you are driving another vehicle, a tow dolly.
Just looking on line, it seems the going rate is going to be in the $650-$900 range for that run, depending on the exact locations in RI and MN. You can try calling some car transport companies, or you may want to contact a dealer auto auction to see what companies they deal with.