List prices in every industry except hospitality and full service dining are a complex mess of horseshit that are compiled for everyone but the customer. That's the customer price list, a completely seperate thing.
List prices are the generic figure designed for insurance companies, emergency response personal market analysts and lawyers. Warehouse burned down? That sucks, but it could be worse, the insurance amount will be calculated on the list price, not the, typically deeply 'discounted', price you actually paid.
Analyst gets wind of a bunch of stale inventory, the totaled list price of that inventory is what's going to be in the headline.
They'll use list price as part of calculating your sentence of you get caught stealing a bunch of stuff too. Everything basically but establishing a price.
For purchasing purposes you never bother with looking at list, it's worthless. Find a company similar to yours in size/purchasing volume, but located on few hundred miles away, and just call up the boss (or similarly placed to you person) and ask. Stopping in with them is even better, for the price of lunch you'll know exactly how far the account reps are willing/able to go. It's simple professional courtesy to share pricing details with those on your sector, but who aren't direct competitors. As long as you don't blab who gave you the info then it's all fine.