thanks to all for your replies
in amazon spain or other important retailers there is no f... stock of any above 1000w
it is so sad but this is the situation here, and probably in all Europe right now
so using 2 psu should not be as good as 1 big in terms of stability or realiability u think?
Since you are from spain why must you buy from Amazon if the product aren't available in spain location? Use ebay or Aliexpress and get your package delivered to you in days or a week time, just make sure you buying from a seller that have sold many items before, that's all.
can't wait more than 2 months for aliexpress or 2 weeks for usa and meanwhile I have 6 rtx 3070 without mining xD