Mars balance mass challenge only on 20000$

The Challenge is to develop ideas for how NASA can turn available entry, descent, and landing balance mass on a future Mars mission into a scientific or technological payload. Proposed concepts should indicate uses for ejectable mass up to 150 kg prior to Mars atmospheric entry and/or another 150 kg during the entry and landing phases of the mission. NASA is seeking concepts that expand scientific knowledge or technological capabilities while exhibiting a high degree of practicality.