WARNING: Argentina New Entry Fee for US, Canada, & Australia
 

I just entered Argentina at Jama and had to pay $160 to enter. I was told that I was the first to do so and I had to show them how to go online and pay the fee. This new "tax" that I did not have to pay three years ago. The good news is that this fee is good for 10 years and they stapled a paper in my passport, which was good because I just went in and out of Argentina twice in two days to try to get parts in Ciudad del Este, Paraguay and Foz do Iguazu, Brasil.

The other issue with Argentina now is exchange rates for US dollars, which vary drastically. In just two weeks I have received from 4.30 to 7.20 Argentine Pesos per dollar US. I got 7.05 in Jujuy at a Casa de Cambio and wished I had changed more. The best rate was in Paraguay. Note that if you use a credit card, you are probably getting the low bank rate. The official bank rate is low 4´s. You may want to try to buy Pesos before entering Argentina.

Your post does not say so, but I assume the "Tax" also includes UK citizens.

Is that right ???

No, isn’t right. As the OP says is a “Reciprocity Fee” (not a tax) and only for the US, Canadians & Australians. Our government charges exactly the same money than what others countries charge us for a visa (than we don’t ask). One fair shot… sorry!

Fee
 

Okay, it´s a fee, not a tax. I never had to pay this entering overland in the past, except when flying in.

No, the UK is not included as far as I know.