Get them while the prices are low. I just scored 2 tickets from Barcelona to Zaragoza for January for 50 euros.
And for the first time my credit card worked on the site.
Hi from Wisconsin,
For an easy way to purchase RENFE tickets at the official discounted prices, go to loco2.com
If you don't believe me go to 'the man in seat 61'.
wayne iNIW
FYI This was easier for me. Loco2 was bought out by Rail Europe where the tickets are more expensive than buying direct with RENFE. I am seeing "A $5.95 booking fee will be added at checkout" on Rail Europe
https://en.wikipedia.org/wiki/Loco2