As other users says in other posts.
Pardoner: We don’t even make them to profit, we make them to have something for us to use and sometimes leaves the shop somewhere to help people. The profit is too small to make a great difference. I just leave mine on Earth Tower so we can rebuff faster and I help a lot of people who want to do ET runs.
Squire: I don’t actually know the values but Lv.15 repairs is sold on Klaipeda (server) on Fedimian Ch1 (town) for 115-125 ~ 140s which is pretty much low profit. Weapon maintenance is the most lucrative one but as well filled with low cost shops. I don’t really use my Squire as shop but I think most of them opens the shop mostly for their own usage.
Alchemist: Gem Roasting isn’t really profitable. Potion making is hard (need to farm materials) and prices are always a fight + time to craft plus new combat changes would make them more profitable but there will be good potions on NPC at low~medium price so don’t hope high profits unless you spend a good time making potions and farming required materials.
In general, although these classes are meant to be shops for profit it’s something mostly done current for our own usage, convenience or small profit.
I strongly recommend leveling a character to farm something else (such as lv.315 materials to sell, a scout 3 for d170 etc) than an AFK shop, unless you really want to have one.
Some of these classes does have good alternative usages such as Squire Base camp (warp+food) as well open repair shops while grinding. Pardoner can open shop anywhere you need it, especially if farming DPK materials for more than one hour or grinding. Alchemist can be useful for awakening gears and briquetting (changing weapon skin) as well for making potions for yourself (if there’s none on market) and Magnum Opus to make materials from other materials which in some cases is profitable (but on most of them it’s useless).
For me it was great leveling the Squire and the Pardoner, I can setup the base camp wherever place I want and put the Pardoner there for 3 hours buffs. If you’re really going to level two AFK shops I recommend this, not for profit but for great convenience.