For the cards you're looking for to complete the missions, you could be spending anywhere between 70 and 2500 Pack Points per card
BT16-061 U Digimon Lv.5 DoruGreymon Color Black Purple Cost 7 DP 7000 Digivolve Cost 1 BlackPurple 4 from Lv.4 Form Ultimate Attribute Data Type Beast Dragon/X Antibody/SoC Card Text 1 [Special Digivolution Condition] [Digivolve] Lv.4 w/[Dorugamon] in name or w/[SoC] trait: Cost 3 [Effect] Collision (During this Digimon's attack, all of your opponent's Digimon gain Blocker, and the opponent blocks if able.) [All Turns] When an attack target is switched, this Digimon with an [SoC] trait Tamer card in its digivolution cards may digivolve into a Digimon card with the [Beast Dragon], [Undead] or [SoC] trait in the hand without paying the cost
Mid-tier cards (#510) have experienced more volatility, with some corrections from launch highs
Based on the latest market prices tracked on TCG Stacked, Mantyke is worth about $0.11 USD
Its peaceful appearance is merely a ruse: those who are foolish enough to be lured in by the calming glow of its lights often find themselves the recipients of a swift and merciless death
Then price it on recent sold comps for that exact card and grade, not asking prices