Well sure offer away, but remember he did indicate specifically that he
was interested in the DX-160. The SX-190 is in my experienced
ovepriced on the secondhand market for what it is.

The DX-160 and all it's brethren are more reasonably priced, have more
complete coverage and are pretty decent performers for the money.
Indeed I found an old Popular Electronics that reviewed the 150B and
found it to be quite a performer (by 1970 standards) for the money. My
150B that I picked up at an estate sale complete with original speaker
for $10.00 would hear a lot of stations, and I though it looked pretty
neat as well.