I'm considering a power washer for glass carboys and buckets; will also use it for cornies once I go the kegging route. The pump is the primary component, so that's where my planning has started. They seem to cost $40 to $50. Fittings etc must add another $30 or so. Considering a Mark's or Bucket Blaster can be bought off the shelf and ready to go for $70 to $90, what's benefit of building?