The massive price increases

Has anyone noticed that the European trips prices have increased significantly over the last 3 years? Take the Northern Exposure tour which I went on in 2017 I found my invoice from 3 years ago I paid 3188 Australian dollars I see it now at 4880 Australian dollars which is a 34 percent increase. I’ll give you the tip now the tour is no way near worth the current price you spend a lot of time on the bus and once you leave Oslo there isn’t much you do and you stay in campsites. I see the red star special is now over $8000 and a few others are way more now. Can someone from Topdeck justify the huge increases?