After seeing the wide discrepancies and overcharging that happens on the market, I decided to break down exactly how much one piece of each resource is worth to me as a fashioner, to help stabilize prices to something more sane.
As a middling 20's skill in all three fashioning disciplines this is from the perspective of a crafter who's started to hit the limits of what NPC tools and workshops can get you, and is basically just churning out basic goods to sell to NPC's to get the money to upgrade their tools and build a better workshop.
Tanning
I'll start with tanning, as its one of the simplest to break down, as well as the simplest in game. No time consuming spinning, weaving, and sewing or unreliable supplies for jewelcrafting.
I generally produce High boots mainly, although whips take a third of the resources but the same effort, and are overall more profit per resource if you can stand spending triple time churning them out.
1 soft leather gets me roughly 2 silver, although that can be increased to 3 silver for triple the time.
1 firm leather fetches about 3 silver, although that can also be increased to 5 silver for triple the time.
Both can be produced fairly cheaply, as bronze/copper blades and salt tannin are dirt cheap and easily obtained. Overhead is fairly low. The more advanced leathers have much higher overhead, and I don't currently have the skill or blade supply to reliably churn them out. Mass production is thus far less viable and selling to NPC's far less lucrative. I will however provide their baseline value if they were mass produced and sold to NPC's just so the information is available
1 Rigid leather is slightly more than 8 silver per, increased to slightly more than 10 for triple time
Tannin is still fairly easily procured for rigid, but slightly more expensive and more limited supplies. Skins and blades are what make or break mass producing rigid leather.
I currently don't have any reptile or higher leather to figure out their stats if mass produced and sold to NPC's. I will update as I get access to more leathers and skins.
Obviously if you have the market slots, you can potentially sell them for more than base price to players. I am however posting this from the position of a fairly new person with access to only the basic market slots. This is the guaranteed baseline profit of someone producing basic superior goods without taking market prices into account. Someone producing inferior goods to skill up will be making less as well. As well as increased profits if someone can acquire the more complex resources to make higher tiers of studded and scale armor.
But for a Fashioner only, working without reliable access to metal goods, that is the baseline profit one can expect to make per the three most common types of leather.
Using that, I can more or less figure out what each skin is worth to me.
Hare skin at one soft leather, taking into account blade and tannin cost, as well as time and a healthy profit margin, would be worthwhile at 90 copper or less.
Doe, at 2-5 soft leather is significantly more valuable. it averages to about 3.5 soft leather, so it makes me about 7 silver. factoring in time, profit, and overhead, it's worth about 4 silver to me, max.
Stag, at 3-7 soft for 5 average and .75 firm makes me about 12 silver. Its worth about 7 silver max to me
Boar 2-5 for 3.5 firm, .25 rigid. Makes me about 12.5 silver. It's worth about 7 silver to me.
Bear 2-3 for 2.5 firm, .75 rigid. Makes me about 13.5 silver. It's worth about 8 silver to me.
Aurochs 2-5 for 3.5 firm, 1-2 rigid at 50% for .75 rigid. It makes me about 16.5 silver, and is worth about 10 silver to me.
(please note that this is from solely the perspective of mass selling to NPC's. Really it probably isn't viable above stag skin levels given the time It takes to hunt animals currently. You might even be better off selling raw leather on the market.)
This is a WIP of something I plan to post on the Therin market forum. Just posting it here first because I'm tired of doing maths and want to finish the other sections before I start posting there.