Adobe is being very clear about the price being "not introductory." They go back on that at the risk of a heap of bad PR, but of course in life their are no guarantees. If the price goes up later, I'll re-evaluate. I disagree with what some others have said about this being a "trap" or you'll have no choice if/when Adobe raises prices. You ALWAYS have a choice, AS LONG AS you take steps to maintain your independence. Here, I'm thinking of using the "maximize compatibility" option when you save out Photoshop files, and saving your photo Raw files outside of a proprietary database. (Exporting edited Raws as .DNG is worth considering here, as I expect your Lightroom edits will be preserved if you open them in Adobe Camera Raw later.)
The biggest risk I see is Lightroom. There's a good chance that LR6 will be Cloud-Only. At which point you install it, it upgrades your LR5 catalog and you are stuck. There will be no legal way to get at your lightroom catalog without continuing to pay Adobe.
Photoshop has some of the same issues, you can create files that presumably use features only available in CC and those won't open properly in CS6. Though that's pretty unlikely at this point as most CS6 files open well in CS3 so it's likely we've got a fair few years before that comes into play.
I think you are right that Adobe would look bad if they hiked the price up dramatically. I don't really mind if it goes to $11 next year, but I do worry that they could release LR6, then discontinue this bundle and force us onto the full creative suite.