Have you spent $28,000 on nonessentials for yourself over the course of your life? Most people can easily hit that amount by having a nicer car and house/apartment than they "need". If so then by revealed preference, you value those nonessentials over 28 statistical lives; do you also value them over a shot at immortality?
From Mike Darwn's Chronopause, an essay titled "Would You Like Another Plate of This?", discussing people's attitudes to life:
Conclusion, graphs, and references in article. As usual, I recommend reading Chronopause.com as Darwin has many good articles; to quickly link a few: