The Enoteca l' Alambicco, founded in 2001, is located in Sorrento historical center,where you can find the best wines, liquors, extra virgin olive-oils and Campanias typical food.

http://www.wineshop.altervista.org/

This is located down one of the small streets (Via's) heading to the left of the port walls from Piazzo Tasso (the main Sorrento Plaza) - you will see a wider street on the left and several smaller streets on the right side looking towards the sea from Piazzo Tasso - this store is on the smaller street.  As of 2009 they have very reasonable prices and Limoncello in nice decorative hand-painted bottles that can be used for display in your kitchen.  And they sell Limoncello Crema - which is the not-so-harsh version of Limoncello.