I can't comment on the science, but charging that much for only a few days supply is outrageous. They sell it because some folks will buy it anyway. The grey market has lots of people who don't know what they're doing and won't bother to learn.
I found this blend mentioned recently. I'm not getting it from there. After talking to some experienced people in peptide research, this combination can't and shouldn't be mixed together at all. So why are they offering it? One researcher explained that NAD can oxidize peptides or get broken down with peptide additives. MOTS-c is protein-like and sensitive to ionic strength or solvents. 5-Amino-1MQ is hydrophobic and usually needs organic solvents like DMSO or ethanol, which would mess up peptides like MOTS-c. I put the explanation through ChatGPT because even though it's in English, I couldn't follow it.