I shared the full study yesterday too, but a clean list from the best odds to the worst deserves its own post because case opening sites are mostly reputation-based (grey area, no real regulation), so making the odds public is the only way to hold them accountable a bit.
Some of those sites should genuinely be ashamed lmao. We're talking odds nearly as bad as official CS2 cases.
Industry average: 89.53% RTP. For context, regulated slots sit at 94-98% RTP.
Full raw data: https://docs.google.com/spreadsheets/d/1q1t5YsI_7KLv6GKu2sPH-jEH8_vFvh_k/edit?gid=1808619923#gid=1808619923
Full study with all findings, individual case odds can also be found here: caselab.gg/cs2-cases-roi-database (not needed though, the sheet has everything)