Car cleaning product retailers?

Moved to Spain in May and living in Xativa (40 mins from Valencia). There's a couple of car cleaning products that I swore by in the UK but have been unable to find at all here. They are:

MER Leather Cleaner
MEGUIAR'S Quik Detailer Spray

Have looked to buy online but most UK based online stores will not ship these products to Spain, and those that will are asking crazy money for shipping.

Does anyone know of any good car accessory shops or similar anywhere between Valencia and Alicante that might sell these brands, or that have a good range of car cleaning products? (In fact if anyone knows of a retailer  anywhere in Spain selling these specific brands let me know so I can make contact).

Alternatively, does anyone know of any Spanish based websites which sell car cleaning products online?

What you need to look for is a auto-refinishing shop. Sells the paint, thinners to the trade& public. I bought Farecla G3, which is uk made for polishing up faded plastic headlights but is a car polish and I find is good. There is also a G 4 which is much better but also more expensive@ 50 e. Leather cleaner / restorer I bought  in an Eroski's, buffalo brand I think, colours available too.