I needed something for my fireplace mantel and have no plans to use them for flowers or to wash them (besides a quick dust or rinse). I am also on a tight budget and this project fit the budget. I purchased some of the vases at the Dollar Tree and some were vases I already had. Rather than go through all the steps in the tutorial on Sugar and Charm I simply poured a small amount of paint (which I had leftover from other projects) into each vase and rolled them until they were coated (on the inside) with paint. I poured the excess paint back into the paint can and then set them upright to dry.
As the vases dried, some paint pooled at the bottom, but it's not very noticable and since I'm not using them for anything other than decorations I'm okay with think paint on the bottom. If you want to use your vases for flowers, don't paint them the way I did, look at the tutorial on Sugar and Charm.