If it’s send by normal post it won’t even get as far as Aduana to generate the VEP.Yes you can receive packages here. You have to be registered with AFIP (e.g. as a self-employed person), and be able to navigate your online banking "mis pagos online" feature, both of which will allow you to generate and pay the electronic AFIP invoice ("VEP"). The import duties are calculated based on the FOB (i.e. value + cost of shipping, at the official exchange rate) value of the package, I don't know the percentage offhand but I can find out, since we did this quite recently. It wasn't 100%+.
Even if you send via DHL, DHL will release the package to customs once it arrives in Argentina. You get notified by customs, they send a link by email to take you to a page where you can generate the documents for payment, you pay your VEP, and then wait until Correos, not DHL, deliver your package. We were able to track the package on the Correos website, and if I remember correctly from arrival to delivery it took about 2 weeks in CABA.
This is speculative, but since Correos manage delivery here in Argentina, it shouldn't matter too much whether something is sent by delivery service or by normal post. We had something sent by post, which got here, could be tracked, but I wasn't able to get it out of customs because I'm not registered with AFIP. It got sent back to the sender (and it arrived there).
Too much FUD in this this thread already.
I don’t know where you get your information from but from the previous time we sent something DHL prior to this. We paid the customs fees and DHL brought the package.