On the subject of 0dte, came across this 3d plot, one can zoom all around it. http://charts.gammaedge.us/net_charm_oi_3d_SPX_-1_60_2023_6_7_16_0_0_e1251a5b.html Even though the tool is animated, I don't know if this tool is rendered in real-time with their service. Speaking of service, anyone subscribed? Any better value for those of us noobie's that want to learn option trading?