To send $20 to GBP, you get 11.48 GBP with Xoom and 14.57 GBP with Wise.

To send $100 to GBP, you get 66.45 GBP with Xoom and 72.85 GBP with Wise.

To send $1000 to GBP, you get 709.70 GBP with Xoom and 728.54 GBP with Wise.

To send $10,000 to GBP, you get 7,154 GBP with Xoom and 7,286.24 GBP with Wise.

Sources:

https://www.xoom.com/united-kingdom/send-money

https://wise.com/gb/currency-converter/usd-to-gbp-rate?amoun...