It's not meaningless if you want to trade for a specific item OR specific items that are within the same price range. Whether they intend to or not, many people are being extremely vague and it creates a bidding situation. WTT Mine for exactly (x) = Good..... mine for maybe a glock, maybe an upper, maybe some ammo = bidding situation without a stated value as all of these things have mild to wild pricing.
Yes, but who decides what has a hard value? Whose value?
A month ago, ARs, AKs, Glocks, and mags had pretty set values. Now?
The seller knows what they want, they should do the research and set a value.