Right now, using Dolar Blue, the prices are quite reasonable. In a non-fancy steak place, you can eat well for 2, including decent (but not top end) wine, for under US $50. A short taxi ride home yesterday was about US $2. Many other things are currently quite cheap.

But prognosticating "in a few months" is impossible. If history is any indication, inflation will eat up much of the recent devaluation savings, and then there will be more devaluation. Nevertheless, it is likely that you won't find things very expensive unless you're looking for imported products or eating at the top tourist traps.