I don't know what armor, amulet and gauntlets you are talking about, but I'll do the flight items and then be done. You aren't going to trick me into making your price list
1. Winged Boots: 4 hours of flight that can be broken up into 240 one minute blocks, doesn't have to be carried around with bulk, like the carpet, doesn't have the same space issues the carpet has, but only for one person. 45K.
2. Wings of Flying: 1 hour of flight, but faster than the boots. Also just one person. 30k
3. Broom of Flying: bulkier than the two above. Doesn't allow much combat to happen as you have to balance yourself on a stick while you fight. Fighting on it is a great way to die from splat. Speed is in-between the two above. However, the flight is unlimited and the broom can be summoned to you from up to 1 mile away. No attunement. Still only 1 person. 35k.
4. Cloak of the Bat: 40 fly speed, but takes both of your hands and has to be in dim light or darkness, which greatly reduces its utility. You can polymorph into a bat, though, while in dim light or darkness and retain your mental stats. Unlimited night/dark flight. 25k.
5. Potion of Flying: 1 use for 1 hour at probably 30 speed. 2500.
6. Ring of Air Elemental Command: 100k It has much more than just flight, which is unlimited and not visibly the reason for the flight like the wings, broom, carpet and boots.