Years ago I worked for a company associated with the hobby industry. Probably not much different than tools. We worked from the alleged retail price industry wide. Dealer got a 40% discount from list when they bought from a distributor. Distributor pricing was 50-10-2 or 50% for any order, additional 10% on orders over minimum, 2% for 10 days. So a distributor paid $4.50 for a $10 list and sold it for $6. The dealer paid $6 and sold it for about $9 to $10. Our cost for making a $10 item was usually about $2.50 or less.
There were some exceptions in the industry. We had one high priced item that was discounted less. (I forget exact amount, but about 10% less than usual) It was an item that had a good market for $40 retail, but no market at $50 retail