Thanks for your message, Umut. We have a regularly updated list of trainings offered by different organizations in the CoP's training opportunities database: https://trainingcentre.unwomen.org/mod/data/view.php?id=1999
You are correct that most GRB trainings are not free. If one arises, we will add it to the database. In addition to the UN Women Training Centre's online course, there is an upcoming HREA course on gender responsive budgeting (https://trainingcentre.unwomen.org/mod/data/index.php?d=44&rid=6429) - both of which entail a fee.
I cannot comment on DEVCO's webinar as it is not related with the UN Women Training Centre.