"Express buses" Kragerø Transportation Tip by Rusket
Kragerø Transportation: 5 reviews and 4 photos
Several bus companies operate along the main road E18 / E39 between Oslo and Kristiansand / Stavanger.
Nor-Way Bussekspress: http://www.nor-way.no/nbeweb/show.do?page=150;1081
They all stop at Tangen by E18, where you can catch a local bus down to Kragerø. The connestion is quite OK, you usually will not have to wait very long at Tangen.
Should you have to wait, there is a shopping centre with a cafe and a chinese restaurant two minutes away from Tangen bus terminal.