I think availability of and deals on physical disk media will start to subside a lot over the next few years. But even then, I save about $20-30AUD on average every time I buy a new game at an Australian retail store than via the Xbox or PS stores. In Australia the price difference would likely be AUD$100 if its USD$100 in the US, but I still expect I'd make all that back, while having a BRD, and not being totally reliant on the internet and Sony's continued solvency and support for PSN.
starcraft - Playing Games = FUN, Talking about Games = SERIOUS