I have enhanced the number attribute, which is available on Concrete CMS default install, I added min/max/step options for number attributes.
If you are using ver.9 or later, you can optionally add big spinner buttons. (If you are using ver8.5.7, big spinner buttons are not available.)
This addon costs $15 for 1 license, and I offer $30 for 5 licenses (60% discount).
https://marketplace.concretecms.com/marketplace/addons/number-pro-attribute/