Boss called me and asked me if I could also replace the filters when I go over to install new plugs and belt on her Gen7 Accord. A quick search locally shows the cost of premium engine and cabin filters to be $17/ea plus tax. From past experiences, the quality of OE Honda air and cabin filters have been significantly higher than Wix or Fram, so I checked my usual online parts seller - Curry Honda/Acura. Price? $19.33 for the engine and $16.66 for the cabin air filter, shipped to my door. Total is $36.99, cheaper than any local aftermarket option plus I have a higher quality part. Same for my car - the Prius. Walmart wants $6.63 for a CH10358, O'Reilly wants $7.99 for a Wix 57064. In a 10-pack, I paid $4.00 per genuine Toyota filter shipped to my door, with a new OE aluminum/teflon crush washer (normal cost for these is $1-$1.50). Unless you have a shop account that gives you a substantial discount, or if its an emergency, I do not understand why one would purchase common routine maintenance items from local retail stores. Buying online saves you significant $$, and you often end up with a higher-quality part for less money than what you would pay at the retail level (for a lower-quality part).