A reader posted “I would consider adding an entry for It’s Liquid Group run by Luca Curci. Mr Curci would typically put out open calls to artists exhibit works as part of a festival with no mention of a entry/ submission or participation fee. Artists would send work to be considered for inclusion and they would often receive a response from Mr Curci, asking for a fee ranging from €50 to €200 (sometimes even more) for each work that has been submitted. Such fees are never mentioned in the original open call.
I have included some links below which go into detail about these so-called ‘opportunities’: