As a professional artist I would recommend Sean at Picoyas in Benijofar over Chinese any day. You get what you pay for, he's closed at the moment for renovations. So if it's urgent the following two art shops stock good quality materials in Elche.
http://ladecoradora.com/ https://www.facebook.com/Llocdart/?rf=1563230783993068 I am an English artist living in Dolores & run art classes locally, from my studio which is based in a tranquil part the countryside overlooking a horse stable. Subjects that are covered include the fundamentals such as composition, perspective and colour theory as well as how to use oil paints, acrylics, water colours, chalks and pastels. The classes are on Monday and Thursday mornings from 10am until 1pm, I also specialise in hyper realism, with examples being shown on the link below.
Free first lessonhttps://www.facebook.com/Zlotogoura/