You HAVE to find a trustworthy source that you know isn’t selling bunk shit. There are tons of fake shills on forums that claim all SARMS in caps are all laced prohormones. That isn’t always true, these all start out as raw powders…then are either encapsulated or suspended in liquid.
Again, a lot of the folks saying that are just doing so as a means to get you to buy their products.

If you do a little bit of research on how much the raw materials and packaging cost to make this stuff, you’ll find that it isn’t expensive to produce.

I have had several conversations on the phones with the owners of some of the companies that I have reviewed like Josh from ProvenPeptides. He has been pretty forthcoming with me about what it cost to produce these research chemicals and I can tell you that you should never be paying $125 for a 1 month supply of Ostarine! In fact Josh said that a lot of their product cost actually goes into the third-party testing that they do to scrutinize their products to make sure that they are legit.

The one company that I will stand behind a guarantee is proven peptides because I feel that provide the best customer support and the most literature to prove how legit their products are.

They are the only SARM company that has a telephone support line where you can actually speak to a human being about your order. They also have a 100% money back guarantee and publish the 3rd party testing on every single batch of their products on their site. This way you know the exact purity of the exact bottle that you purchased.
Here is a links to the review article that I did on them that I would suggest you take a look at:

https://leavingweakness.com/proven-peptides-review/