I paid £5300 for my booking, which was a private single cabin. If you are willing to share a cabin with a stranger you can get that down to below £4500 if you wait for the sale.

Their yearly 50%-off sale is usually the last week of September or first week of October. Flexibility is key - I cleared my entire winter (November through March), and that way when they announced the departures that were on sale I didn't have to worry about any conflicts. I looked at a few other operators and they seemed to be more luxurious (and more expensive). I'm a simple man and don't need all of that!

This particular departure was an all-inclusive. I flew into Buenos Aires, and the package included a one-night stay there and a charter flight to Ushuaia where we boarded. Other options will require you to get to Ushuaia on your own.

They also have an option to depart from Punta Arenas, Chile.

This was my biggest fear too, especially since I'm very prone to it. I went to my doctor before the trip who prescribed me some scopolamine patches, and let me tell you, they worked AMAZINGLY well. The water wasn't violent but definitely turbulent, and my body was very aware of it - but no symptoms of seasickness whatsoever. I ate everything I wanted and drank as much as I wanted with no illness at all. I did have one strange side-effect from the patch - it gave me double vision and made it difficult to do some things like read a book, but it didn't affect most of my other activities. It's vital to apply the patch a couple of hours before you board the ship - I put mine on that morning before boarding the charter flight.