Of the 13 Ace Spec cards, seven of them are Pokemon Tools (Items that attach to Pokemon that do not currently have a Pokemon Tool already attached), and of those seven, five of them can only be attached to specific Pokemon.
Based on the latest market prices tracked on TCG Stacked, Beedrill is worth about $19.50 USD
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions
7 Gix, Yawgmoth Praetor - Mythic Rare Extended Art - $18.51 Sitting at three mana Gix, Yawgmoth Praetor slots right into the current Standard mono-black decks
If youre afraid of printing it into Standard, just throw it in a precon