I have a Primary Arms MD-08 with an American Defense quick detach mount mount I've been thinking about selling. PM me if interested. It would be less than either of the ones you're looking at and just as good if not better. The mount alone is about $80. This is the exact bundle:
https://www.primaryarms.com/Primary_Arms_Micro_Dot_With_Kill_Flash_ADT1_B_p/md08adt1-10bundle.htm
https://www.primaryarms.com/Primary_Arms_Micro_Dot_With_Kill_Flash_ADT1_B_p/md08adt1-10bundle.htm