I can tell you there is a smallish store near the cathedral in Burgos that sells LLadró and I was there with friends ( Alicante Province and País Vasco ) . They had one piece that was amazingly intricate .. nuns and angels etc ... € 2,000 !!!! .. Incidently , if you're in Burgos ask any locals about a tapas bar where they serve the best mussels ( mejillones ) in vinegar on the shell ... We got a call , on the road from a friend from Burgos to say we should go there and it was superb ! Sorry I cannot tell you exactly the name of the Lladró shop but it was right by the cathedral square .
I should add that it was a souvenir shop that sold Lladró .. and there were a few others . All accredited sellers of Lladró . My mum has some pieces that she loves but it's not my style ... though I can see how beautifully made they are . Of course , any El Corte Inglés will sell them too .