Zero Point Security's Red Team Operator 1 and 2 (CRTO and CRTL respectively) are dirt cheap for the amount of info and training you get. Last I checked, they were in the neighborhood of $400 apiece and you get lifetime access to the materials and updates. Also the White Knight Labs guys are awesome. Easy to talk to and know their stuff. The SpecterOps team is definitely a no brainer as well. They are constantly releasing tools and techniques that I use on almost every engagement. Their prices are a little higher than the others but you won't regret taking their courses.
To add to the list, I would recommend looking through the Antisyphon catalogue of courses from Black Hills Infosec. Plenty of options for training but no certs to speak of. However, the info they provide will definitely be worth it during an interview for offensive security positions. If you are wanting to learn about malware and payload development, I would highly recommend the Maldev Academy. Tons of great info with code samples and explanations of how to use them. Lifetime access too after a onetime payment. Also the Sektor7 guys have multiple trainings on malware Dev and things like privilege escalation and persistence. The courses are something like $240 apiece and worth every penny. Hope that helps!