I’ve been using them for a few years now. I’ve been lucky with a some Broadway offerings and more than a few off-Broadway shows. Seating can go from excellent in the orchestra to last row of the balcony or rear-mezz. Really the luck of the draw. I find it best to check the site frequently and act fast as the tickets go very quickly. If I recall correctly the membership costs $20/yearly and each ticket, up to 4 per show, is $5. Well worth it, to me.