Absolutely required - This should be an Out-Of-The-Box feature.
I don’t understand why the Product library isn’t treated as a normal Object with options for custom formulas.
Edit 06-03-2024:
There are so many issues that I’ve encountered working with Hubsput line items.
First of all. Reporting on Line Items is VERY BADLY designed for. This goes into the whole bag of reporting limitations Hubspot has.
Hubspot has a (misplaced) preference to direct users to a list report for tabular reports, BUT:
List report for Line items doesn’t exist.
Can’t have more than 20 properties in a Hubspot report.
Can’t create a calculated column in a Hubspot report.
Can’t reference the same report in a dashboard more than once, and reports in a dashboard are free floating not locked, making for a bad user experience when you’re trying to use a slide bar.
Example: https://community.hubspot.com/t5/HubSpot-Ideas/Field-property-limit/idi-p/499760
Secondly there is a inflexible net price calculation and limitations on the ‘Price Sequence’:
Example: https://community.hubspot.com/t5/HubSpot-Ideas/Net-Price-Calculation/idi-p/546538
Thirdly, there are Hubspot defined limitations to how List Price, Term and Billing is handled:
Fourth and lastly, there’s next to now way to create validations rules on line items, so I can’t make any guard rails on data entry or incompatible product/price mixes
Example: https://community.hubspot.com/t5/HubSpot-Ideas/Validation-rules-for-line-items/idi-p/879369