I'm not so sure about DLR being cheaper, at least not if you're wanting to stay onsite. A standard room before tax at 'budget' Paradise Pier/
Pixar Place starts at 546.00, 'moderate'
Disneyland Hotel $701.00, and 'deluxe' Calif Grand $948.00. Of course these are 'rack rates' so there may be specials and 'deals' at times. I put the quotes around budget, moderate, deluxe because DLR doesn't really 'class' the 3 onsites like WDW is able to do. Plenty of offsites in the area though. But it's not quite the same as being 'in the bubble'.