They're $250 each, not sure why it's confusing. They @ is the same key as the 2 on US keyboards, but if you're accidentally holding down the SHIFT key when you press it you get an @.
You didn't really think somebody was selling 2 HP120s for $50 each did you?
There is really no need to be a dick head.
@ means at, selling something "@xxx" means selling "at xxx" and the rest of the post doesn't make a great deal of cohesive sense either.