What sort of file sizes are you look at transferring?

These 3 options could be worth looking into further?:

Rakuten Drive Pro: 50gb file size, it is $6.70 per month, with a 30 day expiration date on shared links.

SendBig: 30gb file size, free?, 3 year expiration on links if using the free MAX feature from SendBig. They have some good customer support, and aim to respond to email queries within 24 hours (on work days).

Edit: Terabox, $3.50pm, 1080P playback, 20gb file size, 2tb storage.