Single Wheel Trailer?

Okay....I didn't realize there were so many different kinds of single wheeled trailers...DUH! This one is an Allstate. I seems to be in very good comdition. There is some surface rust and the little plates on the sides are there. The trailer is complete including all the tow feature..chains and stuff. I guess it was last registered in 66, as that is the plates that are on it. It is really pretty cool and the keep it for myself tune is playing in the back of my head. Grrrr! Space and money says it has to go though. Anyway...I found one like it on Samba and it doesn't even have a wheel or towing assembly but the price? Oh MY! The guys is dreaming, right? The link to it is below. That isn't practical, is it? Anyway...any imput is welcome. Thanks again for all your help!

Denise