Directemail
they have sitewide 10% of with the coupon code "Directmail"
Got an email about this offer.
I have used them through eBay in the past for generic oil filters (I have not had any problems with them), and directly from website too (generic oil, and air filters).
The direct website prices are a lot better than the eBay prices (unless you got like a some sort of special eBay voucher code locked to your account).
The problem with these guys on website is generally the shipping cost is quite a bit, hence ordering from them is not worth it if you just buying 1 or 2 items. However e.g. you wanted to buy 5 or 8 Oil filters then this website works out really cheap overall. This way they should work out one of the cheapest price for stuff like oil filters etc.
Otherwise for only 1 or 2 items probably better to buy from local Repco/SCA/autobarn/autopro etc (with $0 shipping, and with probably a branded name part)
Thought I might give these guys a shout out, for better prices, and the 10% discount sitewide now too.