Just wanted to update everyone on this thread since it's been another year, almost. We released integration with Quickbooks online for CEDIA last year. We're currently working on a connector for Quickbooks desktop versions. We also added integration to D-tools for the catalog (includes pricing!) and quite a few proposal features, like Payment Schedule and Project Terms, Digital Signature (from client), History section where you can revert back to previous versions with the click of a button, and many more.

If you want a special promo code for a few extra months trial subscription, just email me (josh [at] mysupplystream [dot] com).

Thanks!