That restoration sure made it look like brand new. One thing I thought of though is those leaf springs might not hold the paint too well. If you ever have a substantial load in the trailer they would bend and move which could cause paint flaking.
There is also a few services that will tell you how much the vehicle is worth. Hoosier is correct about it being the replacement value. With that fact I would use the retail (price at the dealer) as a good indicator on what it would most likely cost to replace.
