Must be a salt belt thing, I've never seen that happen. In fact, as rarely as I ever see these racks fail, I would be inclined to slap a used one in there. I sent four to the scrapper last year from wrecks. There was nothing wrong with any of them.
But a shop may not want to install a used one, I get that. Worldpac (a wholesaler) sells brand spanking new ones, original equipment, complete with tie rods, for less than $400 our cost. If they marked it up to a reasonable list price, say $650 or so, and charged the full book labor time of 3.9 hr (which is pretty high, I could probably do a couple in that time), and then charged for the alignment (toe set, which is NOT included in the 3.9 book time), plus the proper fluid, it STILL should not come to $1500 I wouldn't think.
I wish when people ask here about a price on something a shop gives, they would break it down line item parts and labor so we could actually SEE what all they are doing.