£500 for 16c/32t is almost Threadripper money. Not gonna happen. If the 16c/32t happens I expect it to cost about the same, or a smidgen over the 9900K. Y'know, just to kill the 10 core Comet Lake stone dead before it even shows up.I very much doubt they will have such a small delta between a 12C and 16C.
I could see the top bin 8C at £250 and the 16C at £500 with 12C under £400.
Those would be decent prices but they could go more aggressive easily I suspect.