You can use !check to see how many sets the bot currently has which you have not crafted. If you want to know how many sets you can buy for a specific amount of keys use !check [amount of keys]. To buy sets use !buy [amount of keys]. To buy any random sets which you may own already use !buyany [amount of keys]. To sell sets use !sell [amount of keys]

!help
!check
!buy [amount]
!sell [amount]
!sellcheck
!level [desired level amount] to calculate price and amount of sets required.