Upload & Sell: Off
Same report as Jim...turn up, pay, go in with a guide. If you have a tripod & SLR you can get a photo pass which allows you to have 2 hours by yourself. If you stay over the alloted time, you can pay the same amount. Last time I was there (Nov 2011) we paid for 4 hours, which worked out the same as the Upper tour!
Things might have changed, as in 2010 the year before, for the same amount, we had double the time limit!