Myself and BK will hopefully work on it over the next few days and get it prettied up, but the next thing on my todo list is increasing the speed.
Thanks for the interest
I've been working on a simple Argos stock checker this week as a proof of concept. I'm not a web developer so its far from pretty but it does do the job.
Its seems a shame to have it fully functioning (I think!) and it not to be used.
Thanks to black_knight as well for some help starting off.
MOD EDIT / UN-NECESSARY PIMPING:
Argos Stock Checker
It's in early stages but should work on all mobile devices (although can't test all scenarios). I've it tested on an iPhone 3GS and iPad 1st Gen and it works fine.
It works best after it's loaded that you 'Add it to Home Screen' as it can then be loaded full-screen from the iPhone menu from then on.
Gonna continue development on it so keep checking it every so often - have a couple of big plans for it!