Walk into any reseller Discord and you'll hear the same complaint: "My panel says I've used 500GB this month, but my source says 2TB. Who's lying?" The answer is both — and neither. Most IPTV Reseller Panel platforms measure bandwidth differently. Some count only video data. Some count video plus overhead. Some count every packet including retransmits. Some sample randomly instead of measuring continuously. British IPTV resellers get crushed by unexpected overage fees because their panel's bandwidth numbers are off by 300-500%. A reseller in Hull was shocked when his source provider billed him £400 in overages. His IPTV Reseller Panel dashboard showed 800GB used. His source's meter showed 2.4TB. The discrepancy was panel sampling — his IPTV Reseller Panel sampled bandwidth every 60 seconds, missing short bursts during channel changes. British IPTV viewers change channels frequently (especially during ad breaks), creating thousands of short burst connections that sampling-based panels miss entirely. What actually works is asking your panel provider: "Do you use continuous metering or sampling? What's your sampling interval?" If they say 60 seconds or longer, their numbers will be wrong for British IPTV. Demand continuous metering or at least 5-second sampling. Then run a test: stream a 1GB file through your panel and compare your panel's reported usage to your source's report. If they differ by more than 10%, your panel's bandwidth accounting is broken. That brokenness will cost you real money.