Prices are hard to gauge and vary wildly based on individual taste, more like modern art than Magic cards in some ways
The core sets include all Johto pokemon except Celebi but i dont know why it got left out
my Incarnation deck.) In my 3 color decks, after ABUR duals, shock lands, Shadowmoor/Eventide filter lands, check lands, the (Shards/Khans) tri-land, Command Tower, Reflecting Pool (all of these I'm mentioning I consider better than Tango lands), a few utility lands, and a dozen or so basics, I'm simply out of room
optimized cards might not be used in a local playgroup because these cards are "frustrating to play against"
You can also add unique flares and effects to cards yourself as you unlock and earn them as you play