Trade factors within the game.  These are a guide only as the price will always be determined by supple and demand.

Each time an item is processed 1 point is added.

For example wood, has no requirement so is only 1 for production, food is 1 for the water it cost to make the food + process so 2 points.

Produce	Factor		Per credit	Credit per 1000
Water	1		80-100	10-13
Apple	2		40-50	20-25
Cookie	47		1.8-2.2	440-550
Carrot	3		26-33	30-38
glue	3		26-33	30-38
Grain	4		20-25	40-50
iron	1		80-100	10-13
milk	14		6-7	140-170
wool	6		20-25	40-50
Sugar	14		6-7	130-163
leather	7.5		10-13	75-94
Thread	2.5		32-40	25-31
wood	1		80-100	10-13
Monthly	2		40-50	20-25
Quarterly	4.46		18-22	45-56
Semiannually	7.34		11-14	74-92
Annually	10.68		7.5-9	107-133
Biennially	14.48		5.5-7	145-181

Probably best to multiple the factor by the shape. (starting point is 20%) So a 100% saddle would be as per the formula to be listed soon.  The prices are not fixed just a general guide.  This is about the tack importance factor.

Item or tack	Factor	100%
Flattened Iron Bar	12
Cloth	6
Saddle Tree	4
Saddle Leather	16
Bit	8
Leather straps	8.5
Horse Boots	10
Horseshoes	17
Saddle pad	15
Bridle	23
Saddle	35