I think that it starts to have downward pressure at /22 to /20. You can see Hilco's historicals at [1]. Not all purchases are done in public though. It seems t

I think that it starts to have downward pressure at /22 to /20. You can see Hilco's historicals at [1]. Not all purchases are done in public though. It seems to me like an arbitrage opportunity, since /24 and /23 networks have many more potential buyers. But you have to be approved with a regional registry for the amount of space in order to buy it. Observing things from the buy side, I suspect that IP space is being brought to auction in a slow but steady trickle so as to maintain upward momentum on prices. The price has approximately doubled in the last year. [1] https://auctions.ipv4.global/prior-sales https://auctions.ipv4.global/prior-sales