No certs, happy with salary. I don't think not having them has hurt me in any way. If you are new and trying to get your foot in the door I would say they help a little.
"I cant stress enough the importance of switching from a sequential files mindset to set-based thinking. After you make the switch, you can spend your time tuning and optimizing your queries instead of maintaining lengthy, poor-performing code."-- Itzik Ben-Gan 2001