Laptop Repair Advice Needed

Hi, I need to replace the motherboard on my HP DV4000.

HP’s support is trying to tell me that the part I need includes everything but the HD, DVD burner, memory, LCD, and battery. There’s of course a huge price difference between just the board and the case minus the guts.

Is this common, or are they just trying to upsell?

Thanks

Usually they only replace the mobo and other parts, checking is inapprpriate compared to the money it needs.