For oil and filter I use exclusively Amsoil. You can setup a Prefered Customer account, order online, and they ship to your door. They are a little pricey but you can run the oil and filter twice as long (16K Miles) as standard products. The prices shown are list you can sign up online are look for a local dealer on the forum.
Full Synthetic Oil
SAE 10W-40 Synthetic Motorcycle Oil (MCF)
$9.50 Qt
$112.80 Case (12 Qt)
Oil Filter
EAOM103- $14.80 EA
Chrome Oil Filter
EAOM103C- $17.00 EA