Thanks for the advice, I will try Sunae or Felix, as I have read solely positive reviews about them.
As you nowadays pay close to $200 for a simple piece of meat or fish, I think that $250 for a 3-4 course meal is not that overpriced, but maybe I am just a stupid tourist after years of living here.
A friend, who owned the best chocolate place in San Martin de los Andes (selling directly and through all the major hotels/restaurants), was working non-stop. Still he gae up last year and went back to The Netherlands with this Argentine family, as he was tired of the troubles when running a legit business. Apparently it was impossible to hire somebody just for the high season, when work tripled. To hire anybody at all seems nearly impossible, that's why there are so many one-man/woman and family businesses.
I have no problem paying somebody directly for their skills and time. In the end money gets circulated, more food gets bought, more gasoline and other things that will benefit the AFIP and (theoretically) the state/people. What's more, I rather pay a fair price for somebody that is doing a great job than to support 5 uninterested waiters serving bland food, while behaving like they'd rather be somewhere else, facebooking on their smartphone.
Anyway, I will let you know when I have tried one, thanks.