I also realized that a $50 price tag for a decent unit might be wishful thinking (on my part) which is why I am doubling that amount to $100. However I am looking for a nice unit, not necessarily a new unit, just a unit with good ratings.
Ive got one that works id sell for $50. Ill double check tds ratings. Ive been using it but filters should have some life. I paid $100 off another member than didnt use it much.
^^ Typhoon is a great unit I own that one as well. Mine works just fine but isn't name brand. My offer still stands but the above is a good deal and good guy to deal with.