I've been looking into maybe getting a chiller as I prepare for an RDWC run with ~100 gallons. I found a 1/4 HP, or maybe 1/3 HP (seller says it's a DBM-250, but also says 1/4 HP, so IDK) Arctica chiller on CL for $350, but I have no way of knowing what this thing is worth. I see that 'new' it...