Does anyone actually buy Aura Rings?

I thought these rings were 'crossing the line' when Nexon released them, but now that they're here, it's not like they'll go away. I don't use them, but I could see myself using them in theory once timeless weapons are out and I can't squeeze str out of anything else / it costs more than that to get anything else.

KMS and GMS nx have different actual values. I'm sure KMS nx is worth more.