Yeah the second hand market is basically market pricing. Imagine all those people who realize that they don't use Helix anymore or switch to an Axe/Kemper. For those people, the value of an additional Helix Native license might be close to 0, so selling for $150 would be a nice gain. I am also not sure how many people are actually using their Helix Floor in conjunction with Native, so does the steep discount to $100 actually make sense, or does it just encourage the second hand market we see here? In any case that's the reality. I am also not sure if the value of a second hand license is the same as one officially bought from line6 - you seem to underestimate the value trust (do I really want to transfer money to a stranger first?) and flexibility (line6 shop is automated and I can buy anytime I wish, whereas you need to wait for someone to manually gift you in the second hand market). But yeah, no need to have a basic discussion on pricing here :)
Back to topic, still looking for a license if someone wants to sell their's.