It's out there. Just depends what brand it is. Most of the ones I have used were 200mg/ml as well. Just take 3cc at a time. 600mg/week is a great dosage.
You need to post a pic or your thread will be deleted....but if your asking if 300mg is uncommon no it isnt...ive see 400/500/and 600 but that lab is gone used to be like burger king "have it your way"