sorry for the caps but macworld is jan 8th and they notoriously put out new merch then which either makes current hardware somewhat obsolete or drops the price decently on older models. do yourself the favor and wait.
you can also hold ctrl+shift and click and your contextual right click menu will pop up. kinda lame workaround but eventually you wont notice having to do it.
im getting a prob where my tablet wont work properly and my mighty mouse will only select things with the right click not the left click. this only started happening after the 10.4.8 update.