Lots of rain here just recently, and I hear there too. Actually I was in Bcn a couple of weeks ago and barely missed the torrential downpours that apparently started on the weekend (I was there Thu-Fri.)

Re. pricing... Years ago I developed a simple philosophy (this was long before I started working in the world of language teaching.) It goes like this: Consider a line-graph of "price" on the x-axis compared to "income" on the y-axis. Clearly the line starts at zero (a price of zero obviously means you make no money!) Also, it ends at zero (too high a price means you'll get no business.) In the middle then, it's non-zero (hopefully!), and in fact it will have at least one, and possibly more than one peaks. So the question is, where is/are the peak or peaks? If there's only one, that's where you want to set your price. If there are more than one, you probably want to choose the highest one - highest income - or maybe the one which is the highest price, because that means less work for a high level of income. Simple, but food for thought.