i Think i know what he means. and I wonder too.
If anyone can remember back in Halloween they sold the Spider Web Wall Dividers. Bought them for like 150 and sold them for around 50 or higher.
Thats the resale value... if you had 1,000 on, oh say a clone, and you want to buy something that sells a lot to, oh say give to your main and sell it for a lot of credits.
Like the Coffin Couches... 50 each but sells for 10. if you had 1,200 credits and bought all coffin and sell you would get 240.
Im still searching.