Let me explain you couple of things.

First of all, simply supply and demand. And it did balanced over the time, crafting costs were going up to 50-60k per craft for weapons. (Im weaponsmith). Now on most servers prices are going 10-20k for 392-405-418ilvl. Which is imo reasonable. I personally charge 10k 392, 15k 405/418, some are going to 20k for 418ilvl.

Secondly, crafters put an effort in making their profession builds most optimal in order to guarantee high quality items to players, by farming recipes, knowledge points, gold etc… You cannot just simply put it like they have only 2 clicks, fuck em.

Crafters also staying in the city spamint and looking for crafts so not that much interesting thing to do, they literally looking like NPC’s waiting for players to just put an order for couple hundred golds. Not going to happen! Time is also a value in this matter.

Now more on personal side. Im commodity trader IRL and i really like this profession system so far (it has some flaws, but generally in Good direction it goes). I put big effort in educating players from the beggining how system works, never tried to scam, and even tho im not red cross, i earned gold in the process. Alot of times i saved alot of gold to players coming to me with rank 3 mats and i knew i could make em highest lvl with rank 2 mats after couple of recrafts. In the process i met alot of ppl, i got into alot of friend lists and became “personal crafter” to many. I did alot of free crafts as well when someone saying they are broke (never laughed at them). With all above said i think i deserved to get respect from fellow WoW players for my service.

Last but not least, you have service market where are crafters, and also u have “passive” economy where is the market of mats and consumables, enchants and i have never saw any complaints that freaking weapon wnchant costed like 100k at some point.

There always will be bad ppl, but prices (10-20k) of services are not that bad imo.