question NLN.co and LNL.co prices ?

[HDmarketing]

Hello,
I start to see offers on my NLN.co and LNL.co (8d8, 8f8, 8k8 // k8k, n8n...)

Can't find any previous sales for that type of domains.

Any hint on how to evaluate the domains ?
What is the current .com vs .co conversion for example ?

Thank you.