While you take on a huge amount of risk. Congratulations on "saving" that $28.

Not to mention since you can't really spend bitcoins you'll have to pay more for conversions to national currencies on both ends.

This is a great example of where crypto would be useful. But it's not the same as paying for pizza.

Actually, even less than that. To get an avg sized txn sent within the next 14 hours it would cost:

226 * 100 * 0.0000001 * $17761 = $4.01

https://bitcoinfees.earn.com/

How much was the exchange difference?

No idea. I just went into the bank and said I needed to send money to China.