at the ge
world 2 is the best world to buy everythings
One can be bought from Louie's Armoured Legs Bazaar in Al Kharid and Valaine's Shop of Champions (Champions' Guild) for 1,920.
No,it is not possible to change platelegs into plateskirts unless you trade with another player.
The easiest way to get it is to buy it from the Grand Exchange. There is also a plateleg shop from which you can buy it, but it's actually more expensive there. Yet another way to get adamant platelegs is to smith them yourself, from adamant bars - but this, too, is more expensive (due to the price of the bars) than actually buying the platelegs on the Grand Exchange.
I suggest getting your woodcutting lvl to 60 and cut yews, or get your mining lvl to 40 and mine gold.
Probably Platelegs, but I'm not 100% sure.
Bandos tassets, Dragon Platelegs, or Veracs skirt
You can either buy them from another player via the Grand Exchange. Or you can do the barrows minigame south of Canfis. I suggest you look at a minigame guide before you attempt to do so.
Guthix legs, they have better defence in everything but ranged.
You can buy it on the Grand Exchange.
Answer: You can Black Plateskirt and Platebody at the Grand Exchange. You can buy almost everything in the G.E.(Grand Exchange) Black Armor most caost around 3k so try killing some cows for money. ☺ Answer: You can buy most things at the Grand Exchange, but black stuff is hard to get there. Better go to the specialized shops - there is a platebody shop, a platelegs shop, etc. - look it up on the map. Or just wait until you can use the next level of armour.
elite black armour has the same stats as full rune (full helmet platebody platelegs/skirt shield) it is a good armour to buy it is totally worth it