Blue and black have great token payoffs if youre looking beyond the usual green and white strategies
It can even target itself to make its attack safer
So, for a total of six mana, you can make Zack a respectable 4/6 with the Buster Sword equipped
It can buy you life against the aggro decks if they go for it, and it can theoretically present an alternate win condition
Its much the same process with sites like Star City Games, TCGplayer, Card Kingdom, etc., and a lot of the differences come down to the exact seller fees, the buylists each individual site has, and how you need to ship your cards
There is still a window to use instant removal effects prior to the equip so it is not completely effective protection but it is a good help