Northern Tool in Concord has their demo day going on. They have their 4' x 8' folding trailer on sale for $111. I think this is basically the same as the HF one, and probably this one without the tires. There are two boxes which are pretty small - you shouldn't have a problem fitting them in a small sedan. You should be able to get a pair of 12" tires for around $65 at HF using their popular 20% coupons.
The trailer is pretty handy for light duty work and folds up compactly to store.
The trailer is pretty handy for light duty work and folds up compactly to store.