Look for the "Nucleo" boards rather than full-fledged eval kits, e.g. https://www.st.com/en/evaluation-tools/nucleo-h743zi.html https://www.st.com/en/evaluation

Look for the "Nucleo" boards rather than full-fledged eval kits, e.g. https://www.st.com/en/evaluation-tools/nucleo-h743zi.html https://www.st.com/en/evaluation-tools/nucleo-h743zi.html is $26.