Amazon has the Bissell Pet Boost Oxy Formula for $2.99 – 5% Subscribe & Save = $2.84. Lowest price ever according to CCC. Most stores sell this for $6-7. Save more with 5 subscriptions.
Best Buy also has it available for $2.99 with free in-store pickup or free ship on $35+.
Also available at Best Buy:
Bissell Oxy Pro Pet Carpet Spot and Stain Remover – $2.99
Bissell – Pet Pretreat + Sanitize Stain and Odor Remover – $2.49