Noob question on weight reducing bags

[Psyqo]

All,

I'm a returning player from the 99-2000 era. Had a level 52 back then but never had the cash to spring on some of these 70%+ weight reducing bags. I've been doing my research and some of the nicer ones such as Bag of Sewn Evil-Eye are LORE, so your character can only hold one.

What caught my eye is the vendor-sold Bag of the Tinkerers: https://wiki.project1999.com/Bag_of_the_Tinkerers

Is that bag not a LORE item? If so, since it is 10 slot and GIANT size wouldn't that ideally be the goal of most every player to fill up on those bags? I've seen Kavruu's Mystic Pouch going for 10k (https://wiki.project1999.com/Kavruul%60s_Mystic_Pouch) - so is the price difference from 5k to 10k just due to the fact that it has a weight of .4 and the Tinkerer bag has a weight of 1?

Someone enlighten me so I know what cool bags to save up for. Thanks!