FYI, here are the prices of main vaccines in Europe given by a Belgian Minister, sinovac is not in the list because it is not yet approved and Europeans don't want it because it's an old technology, not reliable... compared to the ARN technology used in vaccines like Pfizer or Moderna.
Prices per dose are in the first column, most are in euros, so in pesos it's something like:
AZ (AstraZeneca): 100 Pesos
J&J : 442 pesos
Sanofi : 423 Pesos
Pfizer : 672 pesos
Curevac : 560 Pesos
Moderna : 936 Pesos
As you can see, nothing to see with the prices given in the Philippines!!!