total size of package directory

["IBK @ v6" <ibk%v6.embunsoft.com@localhost>]

Hi,
Someone know the total size of all files nder this directory ?
http://ftp.netbsd.org/pub/pkgsrc/packages/NetBSD/i386/5.1/
I wanna make personal mirror of all files under that directory.

I can't simply recursively download all the files because i just have 
few freespace in my HD ( 15GB)

Thanks