You got off cheap, we're working on $1100 and counting (this includes everything though, tank, stand, lights, decorations etc...)
Stay away from the test strips - they're tempting since they check nearly everything in one easy step but they're not real accurate. The tests we use are by Aquarium Pharmaceuticals - they're most likely what you're going to find in your typical pet store. They come with a test beaker, a bottle of solution and a color chart. Each kit tests something different. I've also seen master test kits that might work for you. We have just about every test kit the store sells but that's probably overkill. Your main concerns with a new tank are going to be ammonia, nitrites and nitrates. I'm ashamed to say that we never really did much with the nitrate kit - as long as you do regular water changes I would imagine nitrates wouldn't be a problem.
And like I mentioned, you might want to get a test for your ph
- it's easier to keep fish if you opt for fish that will thrive in your natural ph
. Trying to change the ph
of your water can be quite a nightmare.