Audio deals you bought that seem impossible for the price?

Unless it’s an discontinued/closeup, b stock item or overproduction/overstock, I don’t believe any well established audio manufacturer will build product and sell it below cost!
Impossible!

1. No one said they did.  

But  

2. This happens all the time. Think about it.

And I'm more of a "sounds good" guy. But you have to go with what you think works for you. Even if it doesn't, you will never know. Until you hear my Moabs.

QSA fuse. How is it possible to get so much improvement for only $71? 

Tekton Moab. Many have searched out the parts and documented these cannot be built for that price, the parts alone cost more than the finished product. Volume pricing brings his parts cost down, but that still leaves labor, equipment, and a huge manufacturing facility to account for. 

Raven Blackhawk. This amp combines in-house caps with some very high quality transformers and resistors. Even the printed circuit boards are JPL/NASA quality not at all your usual shoddy thin trace boards. It is 4 stage powder coated not painted, and built to last a lifetime. For under $4k? Today??! Impossible!