Hi Torrie.
I have just bought 2 tubes of the toothpaste.They have a lot more,so don't worry you should be able to get it as well.They have 3 different strenghts.I bought the $40 and $50 ones which are the strongest.RENAMEL and ROYAL I think they're called.
I will also look into the other toothpaste you've mentioned.I am a vegetarian but maybe I'll try just one and see how I like it.Thank you.Cheers.;)