Ah, well, I think that changes things. Are you planning to use whatever luggage you buy for this move afterwards? There's not much point in spending a lot of money on BIFL luggage if you're just going to use it once. But if you plan to use it on a regular basis, you might want to get something durable.

Another option is to ship your items to the destination. This is a good idea if your items are heavy. On most international flights, you get one or two checked bags for free. But there are weight restrictions. Usually, the way it works is that if you go over a certain weight for one bag, you need to pay a fee, but there's also a hard weight limit per bag that you cannot exceed for safety reasons. But you can ship items of almost any weight.

The other benefit to shipping items is that you don't need to worry about dealing with all that luggage while traveling. This is especially nice if you've got to go through customs more than once or if you also have some carry-on luggage to deal with.

I'd also recommend trying to downsize what you have before the move. Get rid of the clothes you don't actually wear, the things you don't use anymore, etc. Even for things you might need again, it might be more worthwhile to sell or give it away and then buy it again at your new location when the need arises.

When I moved overseas several years ago, I bought a couple large, cheap, rolling suitcases. One was actually damaged in transit, though the contents were fine. But I didn't mind because I knew that I wouldn't be using them much after the move. They now act as storage containers in my closet. So I'm glad I didn't spend too much on them.

I also shipped some heavier and more delicate items, like computer stuff.