I hope this qualifies me for this club.
I have 5 x Powerbook G4 12inches. These are made up of 3 x 1.5GHz (two work perfectly, the third has graphics and power issues, and stinks, and only boots up properly occasionally), one battered 857MHz that was badly damaged in the post but which works, and finally a 1.33GHz (centre front), which also works but is a bit battered too - I was a tad too enthusiastic with the hammer when trying to flatten out the kinks in the case.
For your interest, this is what I paid (including postage) for them - all have been bought in the past couple of years on UK Ebay.
£10.00 - 1.5GHz. Sold for parts but works perfectly. Even includes a 140GB HD
£16.49 - 1.33GHz. Sold for parts with box. Just needed a HD installed
£25.00 - 1.5GHz. Works perfectly but ram area is a bit battered
£16.69 - 1.5GHz. Boxed. But has graphics and power issues.
£18.50 - 867Mhz. Seller packaged it terribly. And it got bent in the post. But works
You can definitely still pick these up for cheap, if you are patient, and don't need an absolutely perfect specimen.
Personally, I love the look of the 12inch. But the build quality is terrible. The cases are far too fragile, much more so than the iBook 12inches. The metal unibody Mac laptops of today are so much more robust.