This is a simple list ranking nc items by worth from greatest to least to help you know what are will net you the most $$$
What are cap values?
NC items are worth in caps. To people on Neopets it's 200NC-250NC a cap
(the cost of one regular mystery capsule in the nc mall).
Essentially people were basing it on how many mystery capsules people were willing to offer for said item.
However it's has become more of an item comparison value or rank system as values are now based on what people are willing to trade through retired items and base on the previous values of those previous retired items. And they almost always inflate if they're popular or stay stable if they're not popular rather than have any deflate in value.
Ex: of a mystery capsule
What are cap to money conversion?
On clraik it seems to be around $1.00 a cap
(varies between trader but NC items seem to be hard to sell and not valued as highly here)
People also seem to discount more on the higher cap items as well.
People usually don't seem to care that much if there are NC items when they are purchasing an account unless there is a lot of them with many of the more expensive items but then the buyers expect a even greater of a discount for those NC items.
Note: It's probably best to ignore the ones that aren't that popular as you more likely have a hard time selling them. Cause those same items tend to be harder to trade even on the Neopets site.
Ex: For clraik a 100 cap item would equal $100
(varies between trader)
TNT has made it a hassle to move NC items. Rather than simply gifting or putting the item on the trade post/shop/auction. You will need a nc gift box to move items from account to account. Of course TNT has added mystery gift box capsules where you can get more boxes. These cost 200 NC and will usually be available the last week of the month.
Ex:
Basic Gift Box