class Wco::Price

def self.list
  [[nil,nil]] + all.map { |p| [ "#{p.product.name} :: #{p.amount_cents.to_f/100}/#{p.interval||'onetime'}", p.id ] }
end

def to_s
  price = self
  "$#{ price[:amount_cents].to_f/100 }/#{ price.interval||'onetime' }"
end