Do you sell Advantage for dogs in one dose package? What is the cost?

Hi Martha! Yes we do. Depending on what size dog you have will determine the cost. Advantage II dogs 11-20 pounds $15.95, 21-55 pounds $15.95, 55+ pounds $16.95. We offer the 10 pound and under but are currently out of stock (also $15.95).

They sell them i don't know the price

They sell single doses yes