Delphi simply put is a village with 2 main streets. This may seem like a very small village, but to be honest, it has a plethora of shops and restaurants.
Shopping...Well the shops start from one end of the village, and are non stop till the other far end.....easily walked in 5 minutes.
A main product sold here is jewelry (gold and silver).
The reason behind this is that it has turned into a family business for many people here. A popular design is the Greek key :greek key ring

Also sculptures, made out of plaster and bronze.

Make sure to spend some time shopping here since some products and offers may be hard to come along, since some jewelry found in Delphi is 100% hand made, and literally one of a kind.
Also if searching correctly you will find jewelry which are museum copies, and make you feel like Aphrodite herself.