You can get a nice combo, for about $450, I paid more than twice that for the camo..
The scopes are cheapies, real cheapies.. Red dot is worth about $80 in camo, $50 in black.. The one on the rifled barrel was $109, I kinda regret that one, wish I bought better, works fine though.
I highly recommend the 870 for a shotgun, it gets awesome reviews!

*edit* I didn't pay more than twice that for the camo 870.. but close, had to do some early morning math...