You're not loading equipment brands. You're chasing checks.
P3's plans are organized by how many tech seats and how many equipment brands are loaded - Business Starter (1 tech, 2 brands) at $249, Business (5 techs, 2 brands) at $399, Business Plus (10 techs, 4 brands) at $599 (source). If you're a painter or fence installer, you don't have equipment brands. You have a paint sprayer and a truck. CurbBid doesn't make you pay for HVAC structure you'll never touch.