GNC is not likely to have Benfotiamine... and GNC is one of the highest priced outlets there is.

I use Doctor's Best brand, and get them easily at a huge discount from Amazon.

NOW makes an affordable acetyl carnitine. That you may find
locally.

In general you will pay 2 to 3 times more locally for the same things exactly as you would online.

If you were taking B12 when you had the testing done, and did not stop about 7 days before the test, then your level does not reflect much information. It only reflects what is in the blood at the time of the test.

If you did not get the new solubilized CoQ-10, you will need at least 300mg a day or more. The new versions are far superior to the older ones in oil.

Stabilized R-lipoic is rather new... very difficult to find locally.

The B-complex is mostly for the riboflavin and B6. Riboflavin is the cofactor to activate B-6 to pyridoxal 5 phosphate which is the active form in the body.