In larger towns in Greenland you may be surprised at the variety of shops and goods. There may only be a few shops, but the selection is wide. Often there are one or two larger super markets selling all from hardware to milk, and a selection of smaller specialized shops. In Nuuk you will find the first proper mall in Greenland.
In smaller towns and settlements the selection is smaller. Here there may only be a single store dealing in food, hunting equipment, fishing tackle and other items necessary. You may also find postcards and greenlandic handicrafts for sale here. The store also functions as post office and bank.
There is no VAT in Greenland, but as most goods must be either shipped or flown in, prices tend to be on par or a bit higher than in Northern Europe.
In Greenlandic shops prices are set and not for negotiation. This is also the case for most street vendors. Do not attempt to hackle unless expressly invited to.