There is no charge for submitting an abstract.
At least one of the authors will need to register in full to attend the Congress and present (either in-person or virtually depending on how you decide to attend).
Should your abstract be accepted as an ePoster for inclusion within the programme, there will be a nominal fee per poster to be included at Congress. The fee covers part of the costs of providing the ePosters, but it does not cover the whole cost. Full instructions on poster submission will be provided upon acceptance.