I made my own waterer for around $5, and it holds about 3 gallons of water. I bought two nipples and put them int the bottom of a bucket i got for free from the local deli. The traditional waterer that held 3 gal. of water was $35, so it was significantly cheaper for me, and mine only took me about 5 min. to make. It is also easier to fill and less messy (water stays clean because it is in a covered bucket).
I made a feeder out of PVC for around $10, and it holds 20lbs or feed or so. It is almost waste free (chickens can't knock the feed out), holds plenty of feed, and is super easy to fill.
For me, it was cheaper, and works better. Plus, it is fun to make little things myself. I got all my ideas from other people on this site.