I don't know about Kobes and I feel like KD's just starter to get more popular after the IV's but as far as Lebrons go all of his sought after and limited shoes hold there value extremely well. SB 8's, Miami Nights 8's, SB/MV 9's, Big Bang 9's, MVP Package, Crown Jewels, and Corks are still some pocket brakers. While with JB I feel they use to hold their value well until they start releasing the same shoes they released in less than a year. The resell for most Jordan barely ever even double in price which probalbly due to the abundance of them and the more poor quality.
Im talking about the normal stuff .
All those shoes you mentioned are fairly recent and all them besides the South Beaches and Big Bangs were dumb limited.
Most people don't stay buying sneakers hard for more than 2-4 years. People come and go. 90 pct of people in general are former hardcore buyers, that lost the passion for it. New collectors don't have the same sentiment towards the old shoes. Which means they could care less about some Miami Nights 8s. Because the shoes like that aren't really loved, they are just loved because they were uber limited.
Which of the recent "valued' Lebrons could they retro in Jordan Brand GR quantities and it not hit the outlets in masses. Maybe South Beach 8s?