The start of May 2013 marks the release of OpenBSD 5.3. Another release brings a swag of hardware improvements along with software features that will give users even more choices when they are building a server, router/firewall or desktop computer.
The inexpensive 3-CD sets of OpenBSD 5.2 are $50CDN, Posters $2oCDN and T-Shirts $25CDN. While you are there, you can also make a donation or buy back copies of editions if you have some that you are missing (something that I have done for this order).
I highly recommend supporting the project by buying a CD release or making a donation. While you are waiting for your physical media, do download the installer and get cracking with this fine, very mature and secure operating system.