Hard drive

Hi all, just found this great community forum, thought I would try to get some
help here if all possible. I have been looking for a Internal hard drive for
a Hp Pavillion laptop. The hard drive is a WD3200BEVE, (EIDE) 320GB I have not
been able to find a new one. does anyone know where I can get one for under
$100.00 or less, if nothing else a different brand that would work in place of
the one I'm looking for. Thank you in advanced for your help