I know a lot of girls think of DP as a lifesaver of some kind, but I try to take a longer view of camming in general and working it as a regular job. There aren't more sites out there like that because:
a) Princess Jenny is actually quite overwhelmed with what she does. She takes barely 2% (maybe its changed?) cut of gross earnings and does payroll processing daily. Its mostly automated but still a lot of work for little reward. My own issue with her is that she's associated with AW and their pack of confusing emo pimp monkeys, but DailyPay was primarily useful to get girls out of their silly AM contracts.
b) For most of us its actually not that useful. Rarely do debts happen so suddenly that a difference of a day to a week would be a lifesaver. Most sites are on a 2 week delay, and then the checks roll in every week or two.
Again, I encourage you to take just a slightly longer view. Camming only in emergencies may get you in a lot of trouble, especially if you're desperate and you end up with one bad night or chain of 3. The best thing to do is just try to keep a steady schedule to even out the pay spikes.