The main Fortune Lady monsters have a variety of useful effects, from the powerful draw engine that is Fortune Lady Water to Fortune Lady Darks ability to quickly overcome to opponent with numbers
If a creature has multiple instances of toxic, lets say toxic 1 and toxic 2, and it deals combat damage to a player, they get a total of 3 poison counters because of the two toxic abilities
Even the +1/+1 counters you get to place on the creature doesn't make the card all that strong
7 Dragonite EX (Full Art) $23.80 A Striking Perspective With competition like this, the Ultra Rares that started things off won't be going anywhere higher than they are right now
It allows for more strategic levels of play, and can easily win you the duel
As a general rule, the cheaper the card, the higher the spread between buylist and retail value