unless you have to return anything then even if you drive past it on the way to work you have to ship it. that can eat into the savings on some items very quickly
much of what is on rock you can get on Amazon and then at least the returns are easy just take to a UPS store.
rock prices look great till you hit shipping if right and left ship from different warehouses you pay 16 for each for the fedex shipping
I was looking at front end parts this last August for my wife's 2000 expedition I could get it all from rock and I would have saved a little money but it was shipping form 3 different warehouses and taking 3 days to get here
for not a lot more I ordered it on Napa online got 20% off and picked it up at the store the next morning
napa won't tell you if they have a cheaper part they could order in typically they want to sell you what they have on the shelf
if you use napa online you can see all the options at the ware house and if order by 3-4pm it is typically at your store by 8am the next morning walk in an pic it up , need to return it no issue bring the slip back with it
with the wheel beating if you get up into a Timken for the 2008 Colorado you are getting about 140 with 16 shipping the dorman depending on what 4wd package you have on the truck is running 160 and you can have it Monday some time if you order it now and 8am Friday so defintily room for some savings between about 160-176depending on which you need and 232 for the dorman at napa
what seems insane to me is every time you change rotors on a Colorado you have to take the wheel bearing off
makes me wonder what a brake job costs