Just a little FYI. Bigalsonline.com has Prazi Pro for 7.99 per 4 oz and the 16 oz is 35.99. I think this is their regular price. When I am looking for anything be it meds, filters, foods, or any misc. stuff I always price check at :
Bigalsonline.com
Thatpetplace.com
Petsolutions.com
Drsfostersmith.com
Jehmco.com
Kensfish.com
HTH