The massive cooler will be because they've had to pump more power through it. Already being close to the limits efficiency goes out the window and massive cooling is required. My guess is it's little more than a highly overclocked 3080. I'd be expecting 50% extra performance for 100% more cash.
If you must buy Nvidia, get a 3080 and trade up when the dust settles.
If you must buy Nvidia, get a 3080 and trade up when the dust settles.