I don't have a crystal ball, but I'm thinking that the next 3-4 months are going to be kind of lean for the PC manufacturers.
I expect to see some price reductions. But, I can't see the future of course.
And I would definitely look into the cost of building your own!
Homemade is truly a fine way to go. It takes a good deal of research and shopping but it pays you back by having a solid system that you know inside and out.
The reason a diamond shines so brightly is because it has many facets which reflect light.