I wonder if this is specific to .com or if short domains in other TLDs are becoming of value. I bought bo.gg a while back just because it was so short and easy

I wonder if this is specific to .com or if short domains in other TLDs are becoming of value. I bought bo.gg a while back just because it was so short and easy to remember, I figured it would be useful. And just yesterday I got an email from what seemed to be a very serious Chinese buyer offering $800.