In the past folks with unwanted ST3 Recaro did swap even..
They were desperate.
Without someone's desperation.. I agree the swap to get Recaro would cost money.
Plus IMO it is crazy to swap. as that makes the car way less worth anything at trade in time.
I would thing the only way to acquire seats would be a junked car.
Then save the OEM from the car so when you sell it.. the car has the seats it came with