I did a lot of browsing on https://www.pureportugal.co.uk, and the place I ended up buying was listed on there, but I'd actually discounted it for some reason.
I know some people here to buy without seeing the property but – generally speaking – I think it is a false economy. This is because:
1 - Places can look much different online. I suspect I discounted my current place because the photos were taken on a cloudy day in the winter
2 - Even in person – and if buying land – it can be really hard to know how the place looks. This is because many places are REALLY overgrown. I had entire terraces which were the depth of a person in brambles. I've known people who have found entire buildings when clearing the undergrowth.
3 - The cost of a trip to Portugal was pretty minimal compared to the cost of buying. Depends on where you are coming from though.
Happy to chat more about this. You can find my contact information on my profile / website.
Also, if you move to this area you can get high speed broadband from the ISP I've just launched: https://gardunha.net