At this time that is not a default option. In the past we’ve stored reference tables using HubDB so a rep could easily look at the price points based on the quantity purchased. This isn’t flawless but it would at least ensure every rep is referencing the same pricing tables.
The other option is to explore a more comprehensive CPQ tool such as DealHub.io. These tools can build in pricing guard rails and calculators better than HubSpot but integrate very well.