If the company is encouraging it but not paying for it I'd take the ASQ route - self study and take the SSGB exam. See if the company will at least cover study materials. $338 for ASQ members. hopefully nothing for study material if the company will buy them.
Then self study, do a project within the company, have the manager sign off that the project was complete, apply and take the ASQ SSBB exam. $428 for ASQ members, again hopefully nothing for study materials.
so, maybe $1000 if you have to buy your own study materials. +$100 per test if not an ASQ member - or $169 to join ASQ.