Ay ay ay
— At the current exchange rate, a 500-peso note is worth about $27 U.S., making it the closest thing Mexico has to a U.S. $20 bill. Still, small businesses here react to a 500-peso note like you’re asking them to make change for a $1,000. It seems they just don’t keep very much cash in their tills. And forget about credit cards at many small businesses.