In a $100M/BTC world, transaction fees would likely still be measured in sats per vbyte, with averages similar to today (e.g., 10 sats/vbyte). However, the dollar value of those fees would increase significantly due to Bitcoin’s higher price. For example, a typical 150 vbyte transaction at 10 sats/vbyte would cost 1,500 sats, or $1,500 USD at $100M/BTC. This makes on-chain transactions ideal for high-value settlements, while smaller, everyday transactions would shift to layer 2 solutions like the Lightning Network. Bitcoin’s design ensures that on-chain fees remain efficient for large-scale economic activity, while still scaling for everyday users.