Well, according to Namebio, the average sales for LN.io is about $100. of course, those containing 8s or 7s are sold for a little more than the others. If you want to sell it now, you probably get low $xxx. However, .io is growing rapidly and these types of domains will be worth a lot more in a couple years.
As always, take my appraisal with a pinch of salt. Good luck
Edit: I just saw Huawei has a phone model named the y6. I am not sure if its going to help. I am just throwing it out there.