That is correct.So the testing results aren't sent with the package? Am I understanding correctly that I'd have to search that specific batch on telegram to find posted results?
Great example= Compound is the corner market, like 711- it is a convenience store, it expensive but easy. You will pay double for your bacon and eggs.
Domestic single vial sellers are the local grocery- much less expensive than the 24hr corner market (convenience store) , wider variety and much better service.
These kit vendors (kit= 10 vials) are like Sam's club or Costco.. You have to buy in bulk, you bag your own groceries, and you have to have a membership (membership in this case learning the vendors and what to buy and how- not to mention how to safely use.)
The membership is cheapest, but it takes work on your part. Not to mention, they are working out of the back of a truck and may disappear any day, or worse goof up and send you the wrong thing that could be much worse.
So yes, testing is per batch and you are highly advised to do your own, or second best look at other 3rd party. Lastly... is vendor provided which holds the least weight.
The good news is you are motivated to improve and already here doing some of the work.