I would be extremely cautious with this setup. You not only are putting your trust in the guy running the show, but in they guy he's sending to your place. It's like hanging a neon "cash here" sign on your door. Yes, it's a bit dangerous going to exchange money anywhere, but at least when you go to a cueva you can be watchful and low profile in that moment. But if your place of residence becomes a known dollar cash stash, you invite a robbery at any moment when you are unprepared for it.I got a guy who will send someone to your place. He prefers USD $1000 or more and hundred dollar bills, so be up front with what you have and he'll be up front with the rate. I did it over a month ago at 7.50. PM me for his contact info. Failing that, there is always xoom.com, which is at 7.18 now, but they charge fees so it actually works out to less (depends on how much you send). Also, xoom.com won't help with the cash you already have here.
Very good postings, all options have risks!! When you leave the cueva they can warn their accomplices on a motorbike to mug you arounf the corner...!!
I don't see why they would do that. They have more at stake than you do, since you can always go to AFIP and tell them there's a cueva functioning at that office (AFIP then sends an undercover agent passing for someone who wants to buy dollars illegally to prove it), so I don't see why the cueva would want to do anything to piss you off.
That is, of course, if it's a serious cueva, not just a guy who had a store in a gallery and thought he would just start exchanging US dollars. The cueva I've been going to for the past 8 months is by referral only - they won't even open the door if you don't know the password.
If you're anywhere near Las Canitas, there is a small place on Maure (near the corner with Arce) between the bread shop and COTO that is non-descript and safe. I got 7.6 there last week. Good luck.