We just bought a bag of river rocks (in a bag labeled 'Gravel') for $7 from Loew's compared to what we were going to buy from Aquarium Services for about $30.
We also saved a bundle on some granite/agate rocks we are going to use for a basking area by collecting them in nearby development areas (prior to any real construction going on, there are all types of rocks being cleared) rather than paying about $60 for just about the same thing at the local A.S.
Anyways, to the point. I was shocked to see the prices for power bars with timers built-in (about $50 at pet stores) so we decided just to get a cheap switched power bar at Walmart and figured that we would eventually get a timer separately for the lights. When we looked at the stuff at Walmart I was very surprised to see the exact same power bar with digital timer (that we had seen at pet stores) for only $14.97. The only difference was the "Wood's" brand model TD8000 at Walmart vs. other brands at petstores. It has 4 outlets on 1 switch, and 4 outlets on a timed program (up to 7 days or the same every day).
Apparently the petstore variety (for $35 more!) have 4 outlets on 2 timed programs (day program, night program) and 4 outlets on 1 switch, but are otherwise identical as far as I can tell.
Here is a low-res pic...





