If you have a Harbour Freight in your area I highly recommend many of their air tools and HVLP spray guns. Always use your 20% coupons and you'll save tons. Its sometimes cheaper to toss a gun rather than clean it and I use one gun for primers and other for colors. under $10 each. Sandpaper is not a good deal there and online search on amazon is your friend. Their 6" RO/DA self vacuuming sander is another great deal on sale around $25. Their 2" mini is fantastic as well for tight spaces!