Do you think they will sell 100,000 copies?
If they literally just ship it to market right now, that's about all they'd have to sell to make their money back.
Are you sure? What sort of cut is SPS getting out of this? How much more would have to be spent marketing and distributing the game? Or even finishing it. I suspect there were conditions which led to Ubisoft being the sole bidder, and at such a low cost.
I agree it's a complete steal for Ubisoft, but I also think there might be reasons they were unchallenged.