This may belong as a new Idea Post, but thought it was fitting to include it in this post’s comments since this post started the conversation with respect to custom product properties.
Regarding product properties, the options contained within the “price” group are somewhat limiting. Under field type, for values you can only select “number”. It doesn’t give you the ability to identify what kind of number you’re entering. For example, is it a whole number, or a percentage. If we want to make a custom product property to account for subagent commissions, we may want to enter in a flat amount (to reduce the total amount) or enter in a percentage of the total amount. It doesnt appear we can account for this minor variability with the current product property capabilities.
However, I know similar functionality already exists elsewhere in HubSpot. If you add a product from the product library, then edit the property (via the deal line item editor) by selecting the pencil next to the unit price, you’re able to switch the discount between % and USD (in my case only USD, others may have multiple currencies). If that functionality could be applied to the field type options within the price group then I think this would solve a lot of accounting and commission limitations within HubSpot’s product properties. Here is a screenshot of the Unit Price Discount.
Unit Price Discount Screen Shot Example