It's not 100% clear what's included, what kind of burners, false bottom, the pots look to be aluminum (not bad, but dings the price).
His gross over estimation of the value of corny kegs is the worst part of the ad because unless he bought them new, they're worth MAYBE $30 each.
Add it up though,
Motorized mill $200
Stand, plumbing, pumps $400
Misc??? CO2 tank? I don't know.
Yeah, it's probably worth $1250.