I was able to purchase everything I needed, new baseplate (including installation), new BlueOx towbar, used Readybrake, and wiring pigtail for under $1000.00. Was very thrifty about where I purchased the equipment. There are RV stores which sell on Ebay and that is were I purchased the new baseplate and new towbar. The ReadyBrake I found on a RV forum classified page. I wired my own pigtail for lights and brakes. My neighbor owns a body shop and installed the baseplate for a great price.
Started towing with my first Class A, 454 gas engine on a P32 chassis. Did not notice any extra gas consumption when towing. 7 to 8 mpg overall.
I currently tow with a 1994 Diesel Pusher powered by a little Cummins 5.9 and a Allison 4 speed. Get a solid 10+ mpg average overall when towing. Have never gone on a trip without the toad!