Weapon Enchantments don't apply permanently

Exactly as it says in the title, I wasted shetload of gold on weapon enchantments via the black market, applied the wep enchantments to any weapon, expecting it’d be permanently added to my transmog list, however I was surprised to see that it was not. ( specifically the aesthetic part ) - I just wanted the glowing stuff to be freely applicable to any weapon I have as I please, however it turned out that all the enchantments I bought, are gone as fast as I got 'em.
and this isn’t the first time I’ve done it, I’ve already purchased a few enchantments via the black market, applied them to any weapon, and reserved the enchantment itself ( just the “transmogable” part ) and now it’s some how bugged or has changed or idk, bottom line I’m really pissed off and I seriously consider qutting a community that takes our money and doesn’t live up to our minimum expectations.

Weapon Enchantments are not stored as transmogs. Weapon illusions are.

This guide explains it all.

You didn’t get my point.
By enchanting one of ur weapons using a weapon enchantment, you can also have the the Weapon illusion, added to ur weapon enchantment (the illusions) list.

I did.

No, I’m afraid it does not.

Having an enchant on a weapon does not add it to the Weapon Enchantment transmogrification selection. Instead, eligible enchantments have a corresponding Illusion item that teaches the transmogrification.

A question, isit possible to get permanent applicable weapon illusions via the black market / auction house?

They are all Bind on Pick up so I am afraid not. Some are learned via enchanting recipes, others drop from dungeon and raid bosses. You can find all those listed in the guide I posted from wowhead earlier. Sorry it’s not the news you wanted.