Perfectly reasonable. Tbh SSA < 1 year ago was a tiny operation, reselling what all others are reselling, and in this category there are tons of active sellers still that are safe to use.
They grew incredibly big by pure chance when QSC died, and made good use of that opportunity to expand and grow even more.
But there isn't a shortage of peptides or sellers, I'm guessing Mia either has experience with this one personally or got a nice little kickback for this promotion, or both. All reasonable.
There are tons like LSPL, HXTNT, Uther, etc etc, its all the same product, companies like SSA don't really produce anything (they sometimes expand to custom production when they grow big)