A set of 2 light pods would be $50 shipped to your door. There are smaller ones that would also be cheaper, but I don't think they would provide enough light output to satisfy your guys' needs. Just 1 of these bigger pods will put out more light than BOTH of the smaller pods, and they would only be about $15 cheaper so the upgrade is defenitely worth it.
I'm glad there are some sort of directions to install a similar switch, with that it should be easy as pie to make these LED pods automatic with the door open/shut.
I'm sure there are tons of ways to light these babies up, you'd just have to find the correct kind of switch to do so, and wire it up properly. That's also something you would have to custom wire yourself though.