Mayan boys, girls, women & men walk the streets of Pana from morning until night selling authentic Mayan good such as textiles, paintings, jewelery, clothing, accessories & even nuts. They can be quite hard sellers and will VERY often approach people dining inside of restaurants along the main roads Calle Santander especially. It is common to be approached a dozen times while eating. It is quite off-putting, as sometimes a refusal will result in a begging appeal for money to buy food. Usually a very firm 'No thanks' will do the trick. Prices of the goods offered seem to compete fairly well with shops selling similar goods in Pana. If you see something you like it is still highly recommended to haggle. Try and pay around half to two thirds of the original asking price, as a guide.
If you're interested in buying traditional Mayan clothes or textiles, the towns around the lake are great places to do so. The quality of textiles here is significantly higher than in most other places of the country. The best quality goods are found in Santiago Atitlan, on the south side of the lake.