Mana Vault (Secret Lair Drop) value

Based on the catalog data provided, the Mana Vault (Secret Lair Drop) cards are valued in the high hundreds of dollars. The standard used version is listed with a value of $1838.24 [1]. If you are looking at the specific version #796, the used value is slightly higher at $1887.93 [2]. The foil version of #796 is valued at $1880.5 [3]. The specific card you are interested in will determine the exact value, but all three listed options are quite high-value collectibles.