I have used NP Quote Request Plugin (FREE Version) on 3x client sites and love the simplicity of converting WooCommerce to a Catalogue/Get A Quote System. Simply click 2 or 3 check-boxes and done 🙂
The last site I had a technical issue; which Cyrus from NeahPlugins resolved for me within a day or two and in the end it wasn’t even the NP Quote Request Plugin at fault. Awesome Support and Great Plugin!