When I got my dob from Andrews it came with two series 500's (a 4mm and a 40mm) and two GSO's (9mm and 25mm). The 40mm is actually not
that bad, but the 4mm is next to useless. I'm trying to think of something else I could do it with (maybe a cheap sight tube).
If you can get all GSO plossl's for little extra then the cost saving may be worth it. The bino's you get arent really any good for astro use, but they are great for perving on the neighbours.