Hi u/Brotheroff - where do you see it for $150 on Amazon?

As far as I can tell, the EF-M2 II for Micro 4/3 cameras is $218 on Amazon.

Maybe you're confusing it with the $156 EF-EOSM2 for Canon M series cameras?

That said, you can get the EF-M2 II faster, and for about $90 less than Amazon via eBay. [Referrals]

Hope this is helpful and good luck!