In the CNI group buy going on now, the GLP-589 is priced at $250. That's about the best value for yellow right now.
When you are talking about lasers, cheap becomes a relative term; IMO $250 for that laser is cheap, relative to the other options for 589 or 593.5. Now, if you are looking for 'cheap' relative to 532 - it'll probably never happen (or at least not anytime soon).