Portuguese wine

Hi everyone. I was in Portugal last week for work. I was able to taste some wines there and managed to buy several and bring them home. I was pretty surprised by the quality and value of portuguese wines, there is so much beyond Oporto and Douro, but I got the impression of all that is not very appreciated and known. In a wine store there was so much wine around 10€ from old vintages and rarely surpassed 20€ per bottle. Sure 13% VAT has something to do with that.

So far I just tried this Dao Caves Velhas 2018 for which I paid 11€, made out of Touriga nacional, Tinta Roriz and Alfrocheiro. It was very elegant, smooth with silky tannins. Reminded me of a Syrah and bit of Monastrell (but fresher and less bodied), with hints of bay leaf, herbs, legumes, leather, black olives.

I was told that they hardly export anything aside from Oporto and Douro and the internal market can't take all they produce, not sure if that's ccurate.

At the end of my journey I was even able to get a submarine red wine for 30€.

What's your experience with wines from Portugal, excluding Oporto and Douro?