1) No it doesn't. Check Wand of the War Mage, Sword of Sharpness and staff of the adder within the first 15 lines of my weapon table.Having seen this come up before, I really have to ask, why not simply use 3e prices? The Hypertext SRD has pricing for every single 5e magic item. Poof, done.
2) The rules for how a massive number of those items which are common to 3e work have changed. The old prices are not necessarily useful. Check Vicious Weapon, Adamantine Armor, Mithral Armor, Sword of Life-Stealing, Dagger of Venom, Ioun Stone Protection, Bracers of Archery, Circlet of Blasting, Javelin of Lightning and the Prayer bead of smiting within the first 15 lines of my weapon table.
So there are...2 items out of 15 to which the old prices might reasonably apply.