Tadeo was an excellent guide! He met us when we reached the Mexico side of the border and guided us through using taxis to get to the downtown, going to a local museum, getting quesadillas, going through several food markets (with cheese tastings), visiting a church, admiring local artist murals, getting a margarita on a rooftop bar, and finally a tequila tasting. This was all paid for / included with the price of the tour! Well worth the $60.
I would highly recommend that you exchange $20-$40 in pesos BEFORE you cross so that you can tip and buy souvenirs.
Tadeo was a great guide. Would happily do this again.