Premier Research Labs - worth the money?

I've made great strides in my health by cleaning up my diet to remove gluten, sugar, alcohol, dairy, etc.

I also began using a number of mainstreams supps and aminos and these seem to have helped as well. However, I am ready to remove excipients and toxic additives...and the search for clean supps led me to Premier Research Labs.

Is Bob Marshall legit? Is the company legit?

Will avoid PRL Zn and Ca as noted by others in this forum. HOwever, if a company is truly legit, why would they sell ANY product that is substandard??

Am looking at their HCl, D3, Max-B-ND, B6-ND, Neuro-ND, Quinol-ND and Greener Grasses.

I'm a 50 yo woman, 125 lbs, goign through menopause..

Thanks for any help!