Had a look through the ideas, didn't see anything strictly what i am looking for. We are doing some big estimates (multiple pages) would be nice to be able to group certain products i.e.. (Audio components, Cabling, Hardware etc) also with sub total for each group.

Ive tried to manually add a sub heading and it has $ figures on the same line which doesn't read well.

This is more ideal for businesses that do Repair / Service / Upgrades
From time to time we will service equipment we deem beyond economical repair and will put a proposal to sell new goods to them. The list gets long and confusing if its not broken up correctly
Thanks