I haven't seen it, but is it just for abs? I think some ab machines are good for people who otherwise wouldn't do any ab work, but there are many non-machine exercises that are as effective as, or more effective than, ab machines. And if you already workout with Cathe, we know you aren't afraid to put in the work.
$250 is WAY too expensive for something that primarily works the abs, IMO. Investing in Cathe's AbHits DVD would be a wiser decision!