Although I am not interested in this chip, I will just drop my 2 cents here
@unityofsaints correctly mentioned the warranty issue. But it is not only that.
A lapped chip, as an ES chip, have a very narrow resale target group of potential buyers. The reason is that someone paying 1400 Euros for a chip will most probably
want to resell it at some point, when new generations come out.
Leaving HWBOT aside, ANY other marketplace with such chips ( eBay ), they simply do not sell.
So, all in all, finding a buyer willing to pay now 1400 euros and be left with a, possibly, non reselable item, is a serious issue.
Other than that, a remarkable cpu indeed.