Mission Molding is cheaper than Lowes and Home Depot by the foot. They will only sell you full sticks which are mostly 16ft long. Usually a savings of 15-25 Cents a foot. Both of the box stores allow you to cut individual sizes and only charge by the foot. Depending on your transportation limitations or if you need consistent 12 foot pieces the box stores may be more convenient (transportation) and cost effective. MDF is so cheap that it was always more convenient for us to buy at Mission Molding and cut on the job site. Both of the Box stores have builder packs that are extremely cheap. The builder packs come in packs of 10 or 12 pieces. I think each piece is about 12 to 14ft long. The selection is very limited on builder packs and usually on the smaller basic styles. I would leave crown molding to the experts since you have the vaulted areas that are not even. Even basic installation can be a pain if you don’t have a double bevel mitre saw. You have to cut pieces upside down and reverse if you only have a single bevel.
