The clubs in that general region are in Murcia, Torrevieja, Valencia and Barcelona. Valencia is probably the easiest but is still 1.5 hours up the motorway.
There is or was a club outside Alicante, but I'm not sure its still running, I'll check and get back to you.
Our club ( Torrevieja) is thriving at the moment thanks to a great president but we have the same problem as everyone else selling models, even the best are difficult to sell. Most people enjoy building them so dont buy other peoples work. The only exception seems to be models that have a strong connection with the local area.