It does say on the site that they are "wholesale" distributors. This is probably the reason they do not offer samples on there. Have you tried emailing and asking? That may be all it takes.
I know this is late in the game but you can almost count on the EOs from Michaels to be cut. That doesn't mean you can't use it. Usually Peppermint EO is best used at 2% or less tho, yes, there are some who use it at 3%...um, can we say,"Tingly"?
Regardless of who the supplier is, you need to research the actual EO before you ever use it in a lip balm. Because of the properties of most EOs they should never be used in lip preps or used in a minute amount.
You have to remember that the purpose of essential oils are theraputic not to "throw" a scent. I know that doesn't solve your problem but it may help to understand "why". :tiptoe:
I will absolutely be thinking of all of you! I may just have to do a midnight yell. I am so-o-o-o-o sorry I can't come. Family things are really getting to a degree that I can't go much of anywhere...sigh Regardless, yall have a grand time as I know you will