Thats the going rate at the moment in most places.
As the others say if you're quick and efficient you can make your money, you have no real hassles, no pricing at night, easier cash flow and your tax is paid.
But it will depend on the site you're on, i've worked on ones where they don't mind what time you finish, on those you can get your dosh, but if you're on one where you are moving around alot from plot to plot and then everyone goes home at 4.00 then it is harder.
Trouble is you don't know what each site is like till you get to them.
I've got back into commercial and after years of domestic it's all i've done over the last 4 months, and i really don't miss the hassle of domestic!