I'll chime in here since I got my 1jz from Ebay.
I got mine from jdmenginescorp like hvyman, mine was extremely clean just like hvyman described! Heres a few pics of my 1jz as it looked when the delivery driver droppped it off and i had unwrapped it from all the plastic wrap they put around it. My particular engine had very nice condition cam lobes and the bottom end looked like it had been rebuilt maybe? Some of the rods had a signature or rebuild mark on them that neither me nor my friends had ever seen before (friend that could read Japanese said it was initials on each rod). My 1j did come with a bad ECU though, which took me a while to figure out since I was new to 1j's but I think the stock ECU going/being bad is just a hit or a miss.
Heres a link to the post of the pics I took of mine when it arrived.
http://www.supramania.com/forums/sh...ad-*no-56k!*&p=1824804&viewfull=1#post1824804
Either way, even though jdmenginescorp was the first place ive ever gotten an imported engine from. They kept me happy throughout the process and kept me well informed on shipping. Engine also arrived completely unharmed; they used southwestern engine transport (or something like that) to ship to here in Houston. And I would not hesitate getting another engine from them if I needed one.
Hopefully this helps ya a little bit.