HPV vaccination reduces oncogenic HPV16/18 prevalence from 16% to <1% in Denmark 7 months ago
I don't think that's what the summary is saying.
My reading of the following is that the cost of each additional quality adjusted life year would be over $100,000, rather than that each vaccination prompts $100k in economic value
Including preadolescent boys in a routine vaccination programme for preadolescent girls resulted in higher costs and benefits and generally had cost effectiveness ratios that exceeded $100 000 per QALY across a range of HPV related outcomes, scenarios for cervical cancer screening, and assumptions of vaccine efficacy and duration