The are 5 different ways across 2 unique modes of transportation to help you travel from Valencia to Beniel. If you're only considering the price, you should check out the bus out of Valencia towards Albatera, as it is the cheapest to Beniel. It's common to find tickets for as low as $19. ALSA operates from Valencia to Beniel, so you book your trip with them! Book as soon as you can, as there may be limited availability.
On your trip from Valencia to Beniel, it is best to book as soon as possible. It won't necessarily help reduce your price by a large amount, but will ensure that you have a spot on the bus or train.