Our MoP Classic item table (the Blizzard item records our Auction House scanner has collected) has 9 other mail legs items between item level 325 and 364; 8 of them carry fixed stats.
Cheapest listed mail legs items at a similar or higher item level: Saurok Legguards at 19 gold99 silver (item level 364, requires level 83), Kilt of Trollish Dreams at 150 gold (item level 359, requires level 85), Phase-Twister Leggings at 200 gold (item level 359, requires level 85).
Connected realms with a listing in the latest MoP Classic scan: EU 0 of 25, KR 0 of 5, TW 0 of 8, US 0 of 23.
Item data: MoP Classic client datamine, build 5.5.4.70631. Prices: per-unit buyouts from one Blizzard Auction House snapshot per connected realm per hour; market is the quantity-weighted median of a realm's listings. Retail column: the retail client datamine.
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