Ultimately, "worth" is subjective and up to you. However, I've found that the complexity of ones work tends to be worth more than simpler ones. Gotta factor in labor and time and energy and all that.

https://www.furaffinity.net/view/60977250/
This piece, for example. Complex character design doing a complex action on a complex background. That'd take a lotta time and energy to create. Ballpark estimate, I'd say this could be on the pricier side, say $40-50. Perhaps the same or more with shading.

https://www.furaffinity.net/view/59012094/
This one, while simpler, is still complex. Simpler background and shading but multiple characters with varying levels of complexity. This one could be around $20-30

https://www.furaffinity.net/view/59251057/
This one, simple character on simple background can be on the cheaper side, say $10-20

Buuuuuuuuut that's just my opinion. I've never done commission work before, and I'm going off the commissions I've paid for xP
So, like I said, you are the only one who can truly apply worth to your own labor

I appreciate the time you took to do this! ^w^

ofc ofc!
Anything to help a fellow fur x3