I have a Blue Thunder 200 Linear amp that I was using for a while back in 2004-2005.
It isn't anything special, if I recall correctly it was swinging about 180 on a Bird meter behind a Galaxy 44 Import.
I put it in storage and recently pulled it out, it's going to have to have a couple of the switches replaced. They are the small toggle switches and two of them broke from the socket.
Everything works, but you can't turn the preamp on because of the broken switch.
Retail/Ebay on this would be around 100-150 in perfect shape(I've had it on ebay twice and it keeps getting deleted because it's for cb use, they threatened to suspend my account if I listed it again)
In the shape it's in(needing the switches replaced), it would be around 75-100.
EDIT TO ADD: The preamp switch is the only one that's actually broken, the others still work, but are bent.
If you'd like it, I'll ship it to you for 65 as is, or I'll have the switches replaced and ship it to you for 120.
Would also swap for highend, with a trade value(as-is) closer to the 100 dollar mark.
I took the cover off to show the internals