GSK SanofiSanofi (NSE:SANOFI) and its partner GSK (NYSE:GSK) are hoping the low price of their experimental COVID-19 vaccine will stoke interest.

In a call with analysts, Thomas Triomphe, head of the Sanofi Pasteur vaccines division, said that its vaccine would cost less than $10 per dose.

The company is also upbeat about the vaccine’s prospects as a booster.

A Phase 2 trial is currently underway to evaluate its use as a booster. Sanofi has a Phase 3 trial in the works to test its overall safety and efficacy.

The investigational vaccine uses a recombinant protein platform.

Last month, the company scrapped its plans to pursue the development of an mRNA COVID-19 vaccine. Instead, it will continue researching mRNA vaccines that could “address future pandemics and other infectious diseases and therapeutics where there is a strong unmet need,” it announced.

In its Q3 earnings announcement, the company announced that vaccine sales grew 16.5% year over year.

Sanofi reported that differentiated flu and meningitis vaccine sales drove the majority of the growth.

GSK is also pursuing the development of a COVID-19 vaccine candidate known as GBP510 with SK Bioscience. That vaccine is currently the subject of a Phase 3 trial.