$25 · Brand new Top fin 10-20 gallon filter

I stupidly bought the wrong size so I’m selling it for the cost of the size I actually need which is much smaller, my fish were flying around the tank! Oops, poor little guys. I plugged it in one time so new clean water went through the filter one time before I noticed my litre/gallon mistake. I’ve rinsed it all really well and am currently air drying it carefully. Any takers?