Are Auction Sites like BaT and PCAR Market Causing a Price Crash on Porsche 993 Prices ?

Are Auction Sites like BaT and Cars & Bids Causing a Market Crash on Porsche 993 Prices ?
Get live auction predictions by the Bid Nerds John Polnik and Michael Deeb.

1998 Porsche 911S
1995 Porsche 911
1993 Mercedes Benz 500E

https://www.pcarmarket.com/auction/1998-porsche-911-carrera-s-15/
https://carsandbids.com/auctions/37Nnyxyk/1995-porsche-911-carrera-coupe
https://bringatrailer.com/listing/1993-mercedes-benz-500e-56/