All About Pocket Knives

Wondering why a 112 folder cost a few dollars more than the 110 of the same grade.
Is it a production thing?

The real weird thing is that the 55 costs the same as they do, even though it's half the size.

Size does not significantly affect the production cost of a folding knife. The labor involved (man or robot) to grind the blades and fit all the parts together is more expensive than the cost of materials.
Price is also a function of what the market will bear. I am sure Buck has the price for every pattern figured out to be the maximum it can be without deterring a significant number of potential buyers.
kj

Why are .22 short cartridges twice the price of .22 long rifle? Same reason.

I was wondering the same thing. I don't think that it was always this way. The 110 auto costs more than the 112 auto. The new light weight 110 with a pocket clip is more expensive than the 112 equivalent. It doesn't make sense that the plain old 110 would be cheaper than the 112.

Two reasons appear to account for standard 110s being lower priced than standard 112s. The used market is flooded with standard 110s and 110 copy cats. Also knife stores have to compete against low priced 110s in Walmart and other huge retailers. For a few years that ended about 6 months ago the local Walmart had standard 110s with fabric pouches for $27.99. Now they are $34.49. 112s are neither as abundant on the used market nor available inexpensive at Wal-Mart.