It is hard to find and trust good online make-up sellers, I should know as I have as I have suffered before.
I had forgot where I bought my M.A.C pigment sample but searching the net I have found the site.
The site sells sample jars of M.A.C glitters, pigments and paint pots but also to my delight the Loew Cornell brushes that the fantastic Enkore from YouTube uses.
She also has samples of the new Feline collection by M.A.C so if you don't want the full jars try a 5g sized jar.
Check the website out HERE