It works by melting plastic filament ($US43 for 2lb/0.9kg) and depositing it onto a baseplate, building up the object layer upon layer. Vertical resolutions of 0.1 and 0.3mm are supported.
Three models are offered, starting at $US499. An extra $US50 gets you a heated aluminium platform allowing prints up to 6in (just over 15cm) cubed without warping and some other conveniences. The top end $599 'expert' model adds an enclosure.
There's a lot of excitement around the web about the Solidoodle, but actual reviews of the product seem as rare as hen's teeth at this stage. If it's as good as it looks, we might see a lot more ABS one-offs showing up in school projects and assessments, model and art exhibitions, and so on.