Thankfully, a lot of the sellers have re-sent me download links and I thank them for that.
Anyway, I have been quoted over $1000 to recover the data, but wondered if among the vast storehouse of knowledge contained in this forum there are any other suggestions.
My wife's suggestion was to go to my backups (like, what are they?)
If this post doesn't produce any replies, at least let it serve the purpose of reminding every forum reader to do a backup NOW!
My drive was only a year old, so it could happen to you.