Wish I could help; I did just about the same thing. I found a trailer on craigslist for 50.00 and put new hubs and bearings, tires etc. because they were all rusted and tires were shot. Keep looking on craigslist, something will come along. Check out the Lawn and Garden section also. I thought about the Harbor Freight route, but I didn't think they were the way to go, just too light weight for me.
Put the plug in.