Higher graded versions of the card can command prices of up to $450, but thankfully, the average price for a non-graded card is around $110
Alternatively to this, you could just use Dangerous's effect to send your Destiny HERO - Denier and then summon Malicious from your deck to make Cross Crusader out of Dangerous + Malicious, but in either case you want to use the Vision HERO combo to add the Polymerization to fuse into your Destroyer Phoenix Enforcer
These cards, even though they contain unique CG art, are played the same as their regular counterparts and bring no advantages upon using them in battle
On third-party websites, the Unified Minds Pikachu goes for around $1-2, while the McDonald's non-holographic Pikachu goes for around $4-10, and the McDonald's holographic Pikachu card goes for anywhere from around $45-350, depending on the card's condition and/or PSA grade
Otherwise, it probably gets hard to keep track of which Pokmon has what HP left and I dont remember doing that