PRO includes access to vehicle intelligence data you can optionally include in your diagnostic reports:

Market value — trade-in, private party, and dealer retail estimates
Title check — title brand, salvage status, odometer discrepancies
Auction history — sale prices, damage photos, condition grades
Warranty status — remaining factory and extended coverage
Maintenance schedules — manufacturer-recommended service intervals
Common repairs — known issues for the specific year/make/model

You choose what to include on a per-report basis.