As of writing this, there appears to be 8 products for the 151 set.

These products are:

  • 151 Ultra Premium Collection

Pokemon Center
GameStop
BestBuy
Target

  • 151 Elite Trainer Box

Pokemon Center (PC Exclusive)
GameStop
BestBuy
Target

  • 151 6 pack Booster Bundle

Pokemon Center
GameStop
BestBuy

  • 151 Binder Collection

GameStop
BestBuy

  • 151 Poster Collection

GameStop
BestBuy

  • 151 Zapdos ex Collection

GameStop
BestBuy

  • 151 Alakazam ex Collection

GameStop
BestBuy

  • 151 Mini Tins

GameStop
BestBuy

If there additional links to more product listings, please let me know! Especially for folks outside of the US! I will attempt to update this link when new listings are made available to me.