Sure, Mexico Telcel Amigo is a great deal from 15 USD you can get a SIM and 10 USD in calls, the avarage price per call is 40 cent dollar per minute. Is incredible, belive me. Don´t look it on internet, it it not necesary.
If you travel to Mexico City and you visit Zocalo, juat walk about 10 blocks to 'Eje Central' and 5 blocks south, and you find many many cell stores. Some of the sell the SIMs at very low cost