Thumb Score: +1

Amazon [amazon.com] has BOSCH 6057C HEPA Cabin Air Filter for $ 6.54 – 5% when you check out via Subscribe & Save = $ 6.21.
Shipping is free with Prime or on $ 35+ orders.

Price:
$ 3.88 lower (38% savings) than the previous price of $ 10.09

Subscribe & Save:

Tier	5%	10%*
Price	$ 6.21	$ 5.89

*Save 10% when you receive 5 or more products in one auto-delivery to one address