Viajero, I've never thought of going to Uruguay to exchange money. Interesting idea.
I have dealt with sticker shock in several ways.....At least part of the time I eat my main meal at lunch rather than dinner to take advantage of mid-day fixed price lunch specials. At night I enjoy a couple of empanadas and a glass of malbec, sometimes in a cafe and sometimes in my apartment.
I no longer buy clothing in Argentina....The exception is leather goods....I confess I am addicted to Lopez Taibo shoes.
If I go out at night for dinner, I may drink a before dinner cocktail at home rather than in a restaurant....If we order wine, I look for something less expensive....whereas formerly I did not pay much attention to prices.
Take public transportation. The collectivos in BA go virtually anywhere you want to go and the cost is still a bargain, especially as the price of taxis has gone up.