domain IDN domains Y1.COM and Y3.com

[Domains4]

Hi everyone

I have in my portfolio two domains IDN and I have no ideea what they are worth or if I can sell them,I bought both of them on name.com expired domains.

The domains are
xn--1-bub.com which shows Y1.COM
and
xn--3-bub.com which shows Y3.COM

I don't know the IDN market very well and I was hoping you guys can give me some advice.
Please appraise.