Okay I missed the first bus, missed the second, now what?

I get £30 a week for EMA, and I'll miss it if I don't show up for my -one- lesson I have. A taxi should be around £20. Doing the math, I would still be "making a profit" as it were. But is it worth it?

Should I call up a taxi and get in school to sit around on a computer editing work I've already done? Or stay at home doing sweet F-A wishing I had done something more productive?