Context
With $ 500.000,00 (an aguinaldo or accumulated savings) the rate you choose changes the result by several dollars.
For historical reference: a week ago $ 500.000,00 bought US$ 321,54; a month ago, US$ 322,58; over the last 30 days, between US$ 317,46 and US$ 323,62 (daily selling data from argentinadatos.com).
Keep in mind: It is an illegal, unbacked market: the published price is a reference average and each trade may vary, plus there is a risk of counterfeit bills or scams.
The other way around? Come in. blue dollar a pesos.