Buy a Lanzarote Mosaic mug to complete a set

Can anyone tell me if there's anywhere online that I could buy a Taza Mosaico Lagarto Mug? 

I bought 2 of these whilst in Lanzarote from a gift shop in Teguise, at the time there were 3 different types of this mug, and I would really like to buy the third for my son, now I've returned home to the UK.  Can anyone help please? 

I've added a picture of the mugs I bought

Thanks, Sarah