My 2 cents!!!!!
If your just removing and replacing with the same sizes, styles and
shapes,
buy them. However, you now have the opportunity to create spaces for
uncommon
sized items. For instance, I built a cabinet for a card table a 4
chairs that is in the kitchen
It's skinny and the side of it is also the back of a desk. If I where
to fill that area with
store bought cabinets, I would only have a desk. On the side of one
cabinet I had 3" to
play with, so I built a door with shelve that now hold all the spices.
I can't tell you how much
space that saves. If you build, don't be common.
Lou