Walmart offers two K&N KN-185 Oil Filters for $3.96. (They are priced $1.98 each, but you have to order a minimum quantity of two filters.) Choose in-store pickup to avoid the $5.99 shipping fee. That's the lowest price we could find for this quantity by $3 and the best per-unit price we've seen. (We saw them for $1.98 each, with no minimum quantity required, last week.)

Also available is the K&N KN-611 Oil Filter for $3.56. (You can order just one.) As above, opt for in-store pickup to dodge the $5.99 shipping fee. That's tied with our mention from last week and the lowest price we've seen. (It's the best deal now by $5.)