I can't say I know anything about the Glidestar, but the fact that it's Scubapro means it's probably OK. Lots of clubs/schools use Scubapro BCDs, so chances are they're reliable, durable, affordable etc, although I can't vouch for that from personal experience.
There is a review here:
Reviewand not sure what price you've got, but Tony Backhurst have them for £100 which seems like a steal (buy some and sell them on for a profit!):
www.scuba.co.ukNo idea if they've been discontinued or not I'm afraid, but judging by the price on scuba.co.uk they may have been.
Hope this helps a little bit! :)