Other than their "We've got stock" events that happen probably 3-4 times a year, the best option to get a hold of a buyvm vps is to hit up the irc channel. Often they have some available when other people cancel their accounts.

If you don't want to try this route, follow @FrantechCA on twitter and watch for announcements. Stock sells out in a matter of days, especially their smaller instances.

You can also check out www.doesbuyvmhavestock.com .

Not shilling, I just went through this to get on a $15/year OVZ and thought it may help whomever is interested.