The 110 Toon Boost from BfA is still account-wide unlike the 120 Shadowlands Boost which is locked to specific accounts, get it while it's cheap! : r/wow
5000 Watt Voltage Converter Transformer Heavy Duty Step Up/Down Convert AC 110-120 Volt to 220-240 Volt Electric Power Voltage Converter w/Circuit Breaker Protection - Amazon.com