No money?
Pay with bitcoins!

The Bitcoin currency is fueled by people seeking to promote an expedient, global, and decentralized system of peer-to-peer interactions. Instead of finding "creative ways" to keep doing the same (e.g. using money), we at dpr-barcelona believe that moving forward in the way we exchange and promote the flow of ideas, requires from all of us to challenge the way we reward the creators and transmitters of such ideas.

"Bitcoin uses peer-to-peer technology to operate with no central authority or banks; managing transactions and the issuing of bitcoins is carried out collectively by the network. Bitcoin is open-source; its design is public, nobody owns or controls Bitcoin and everyone can take part."
http://bitcoin.org

Now you can purchase our digital publications using bitcoins. And [as far as we know] we're the first architecture publishers in doing so! As being an experimental method of payment we are also learning by testing, and will hopefully extend the possibilities to the rest of our publications.

So stop worrying about money and keep reading!