Ricardo Lopez was long reluctant to raise the prices at his Mission District restaurant La Vaca Birria, where he serves succulent beef braised in a red broth packed into burritos and tacos. But as of late, he simply has no other choice to remain afloat. "I wish there was something else that I could do," he said. Just like seemingly every other restaurant in the Bay Area, prices have been increasing at La Vaca Birria, and customers aren't always accepting of the change. So in a recent Instagram post, Lopez addressed a customer complaint about high prices and broke down the reasons his popular grilled cheese birria burrito has gone from $11 a couple of years ago to its current price of $22.