We all want to drink good cheap wine. Occasionally a producer may have full tanks of wine that need to be sold off cheaply, but otherwise why would anyone sell their superior wine for anything less than the market price? If you spend €10 or less on a bottle of wine in this country, at least half of your money goes straight to the Government in taxes. As a general rule, once you reach €10, the quality moves upwards quickly and you should expect something decent.
Some regions can offer greater consistency and value than others. Usually they produce large volumes, have an advantageous climate and good modern winemaking skills. Top of my list would be La Mancha in central Spain. Here the Tempranillo grape can produce simple, tasty, fruity, medium-bodied red wines. Look out too for names such as Campo de Borja, Calatayud, Cariñena, Yecla and Jumilla.