If you google leather Pipe roll several things come up. Looks like it would be appropriate to charge anywhere from $50 to $125 for such a thing. Probably depends largely on the cost of the leather used.
Here is something on Etsy that is similar (
https://www.etsy.com/listing/1804909...?ref=related-5)
I really like the look and design of the one your wife made for you!