I'm not sure about the utility of a monetary payout in this variant of the Sleeping Beauty problem where she is killed at the end of the experiment. Is she assumed to pay for something she values in the one remaining day in which she (physically or psychologically) exists?
I can see two distinct possibilities here: whether she buys something of local utility (maybe an ice-cream), or of global utility (e.g. gifting it to someone she values). This may matter a great deal in the Tails case: even the copy altruistic average utilitarian will recognise that average utility is increased twice as much as in Heads for this case, even though each copy won't know whether or not it has.
This is a link post to the "Anthropic decision theory for self-locating beliefs" paper, with the abstract:
The key points of that paper are also available in this post sequence.