Lotus Chaweng is a large shopping mall with a typical touristy feel, but it does have a store offering good discounts on sports clothing. There is also an outlet store selling Hurley clothing nearby, but on the opposite side of the street.
3 recommendations in Shopping
Recommendations in Koh Samui
It's a place that has a shop in Amsterdam that's pretty high quality, so I'd imagine it would be good. Located in Lamai, it's one of several local options to try out.
Tops Central Festival is a great place to find a wide selection of beers, including imported brands like Sierra Nevada IPA. Try the Sierra Nevada IPA, available at Tops Central Festival, which is a popular supermarket on the island.