Can I purchase apps from Android Market without installing them? There's currently a promo on the top 10 applications, available at barrel-bottom prices. I'd like to purchase them but not install them just yet. My phone is low on internal storage and there's just not enough space to put some of the bigger ones. I can't even attempt to install some of them (yeah, it's that bad).

I'm planning on purchasing another Android device in the near future, and those nifty apps will surely come in handy when this happens.

Please don't suggest the usual circumvention methods of moving apps to SD, installing custom ROMs, removing unused applications, etc. These either won't work or have already been done.
The best you can really do currently is to buy them from the Market (web or app) and then just cancel the download/installation when it starts on your device. This only works with apps your device supports, though. Purchasing unsupported apps was the topic of this related question.