All adventuring parties need a little help sometimes, especially if you're short a cleric.
This set comes with all four potion bottles:
Healing (2D4)
Greater Healing (4D4)
Superior Healing (8D4)
Supreme Healing (10D4)
 
Each bottle contains shimmery resin "potion" and the appropriate amount of red factory made D4 dice.  Buying all four together in a set saves $10.