Everyone has been talking about .io, but I don't see it with such an expensive reg fee. Looking at what's been registered between N,NN,NNN, it's about 50% complete. So I am tempted to buy 1 or 2 for the heck of it.
Two sales this year and both have 8 in front. So I would say if your going to dive into this expensive domain, get it starting with 8, no 4's or 0's. Then possibly next year you'll have the best chance of selling it for a profit.
http://namebio.com/?s=wMyYDM4MjM
Showing 1 to 2 of 2 entries
Domain Price Date Venue
877.io 355 USD 2015-06-26
Flippa
888.io 3,888 USD 2014-05-21
Flippa