Open hours have expanded to generally 8:00- 17:00, though many smaller stores still close early on Saturday (1 PM - 3 PM). Almost all shops are closed on Sundays. Grocery stores have longer opening hours, often staying open until 10 or 11 PM on weekdays.
Open hours will occasionally be noted on doors as "9-21 (9-18)". This usually means that the shop is open from 9 AM to 9 PM weekdays, 9 AM to 6 PM Saturday.
Bargaining is usually not acceptable and prices are as marked.
To purchase items tax-free, you should bring the necessary forms. If paying with credit card, you may need to sign the receipt with some form of ID.
Grensen/Lille Grensen
Excellent selection of shoes
Bogstadveien/ Hegdehaugsveien / Majorstuen
A mix of exclusive brands, mid-price, and bargain shops like Hennes & Mauritz and Vero Moda
Mafallergata
Furniture
Bygdoy Alle / Frogner
Modern interior design shops
Grunerlokka
Small, independent shops with young Norwegian designers
Gronland
These shops are largely run by immigrants and offer an array of fruits and vegetables
Arkaden Shopping
In Karl Johans Gate, there are large pedestrian walkway's meander around large chain stores like H&M and Benetton.
Sandvika Storsenter
Scandinavia's largest mall is located 15 minutes outside of Oslo by train.
Byporten Shopping Centre
Located next to Oslo S train station
House of Oslo
A recently opened shopping centre focusing on interior designs. Illum Bolighus is a subsidiary of a famous Danish department store.
For more recommendations on where to shop, check out http://www.visitnorway.com/.