Before the internet became the common source of information, I spotted a classical guitar in a GC. It looked boutique level to me. Just the makers name, town, and state on the label. I took a chance and made a straight up trade for a 16 series Martin I had, probable used retail value $800 at the time. I took the classical home and called 411. Called the maker and he said he sells that model for $3,500. Now it sells for about 6 G.