The only reason I'm leaving a 4-star rating is because there is some room for improvement, like a way of the customer requesting items for a quotation from VM's front end as oppose to the admin being the one to make all the quotations, but for what it offers it's a great extension, and the ONLY quotation extension for Virtuemart to date. :)
One other thing: despite this component being marked as only compatible with Joomla 1.5 Legacy, it is a FULLY 1.5 NATIVE extension. (I mentioned this to Kevin before, he's not yet updated the compatibility icon...)
Thank you , Sean, I have updated the edition icon!