I love my local shop for just that reason. A tiny bit of planning ahead and he'll have fresh smack packs for me by Thursday before brew day.
I look forward to the day I have my own yeast ranch, but in the mean time, a few Mason jars in the home fridge have cut my yeast bill by 2/3. I've gotten borderline obsessive trying to learn about yeast biology. Growing a 2L starter from my own top-cropped samples brings me pleasure all out of proportion to the $6 saved.