He's not really cheap but he is by far and away the most annoying Pokemon in OU alongside Quagsire and Trevenant. Gliscor is the Pokemon I have caused the most ragequits with by far.
Rotom-W is a better defensive wall than Swampert since it has almost the greatest typing in the game, also only weak to Grass. It can run either phys. or spec. defensive and do fine, but phys. is generally preferred. It can go offensive too since its offensive typing is ridiculously strong. No Ground types except Scarf Excadrill or Garchomp can switch into its Electric STAB because of Hydro Pump/Scald. Washing machine is a little **** and the bane of a lot of teams' existence.