There are two shops in Erfjord:
Joker has everything for your daily needs (food, drinks, household) and furthermote post office and fuel station (fuel for boat and car). For more informastion, map and contact information, see (norwegian): Joker Erfjord (Hålandsosen)
Bygdaliv is a shop located with Slipp & Mek AS på Tednes. Bygdaliv has everything you need: tools and instruments, paints, boat accessoiries, fishing tools and accessoiries, paints and more. Contact information: Tednesveien, 4233 Erfjord, tel. 52 79 99 79 or on Facebook.
Where to find these stores? You will find a map here.