For reasons that are “totally” coincidental to the news of the day, I had a quick check to see how much the domain Y would cost:

Screenshot of Porkbun prices for Y.co. Domains Y.inc for $3057.15, Y.xyz for $54583.41, and Y.pro for $2729.65 are available.

Hmm, might be a bit much for a joke domain. 😃