In reply to Reach>Talent:
Cost of parking? It's been a few years since I went last, but I don't remember paying anything for parking in Calpe except in the old town... though I suppose it depends where you're hoping to park. I had no problem parking outside my hotel.
I did get fined when parking in the town centre itself, and it was a bit of a larf trying to pay the fine (it's actually dead easy in the nearest parking meter, where you simply pay for parking if it's on the day of the incident itself).
Thinking about it, I seem to remember the hotel issuing me with a parking permit, though I might be imagining this. Make an enquiry to the hotel.
You can climb in Calpe itself, on an outstanding piece of rock. I guess it depends on what king of lcimbing you're after and how long you're going for.
http://www.rockfax.com/databases/results_crag.html?id=247
You might be able to catch a bus to within walking distance of Sierra de Toix.
And I'm not au fait with this crag, but it seems to be near Calpe
http://www.rockfax.com/databases/results_crag.html?id=882
I'd take a car, myself, as I'd want to sample a range of crags- though if it's only a short trip, you could just do some ace routes on the Penon.