Buying Group vs web pricing

OK, here is an example for this item

HP

LaserJet Enterprise P3015dn Printer

Get fast, high-performance printing with advanced security features. Expand as your business needs change, using an open EIO slot, open memory slot, two internal accessory ports for connecting HP and partner solutions. USB cable not included.

PC Mall Part #: 7870948       Mfr. Part #: CE528A#ABA

Web Pricing:   $376.99
Buying Group:  $359.99 


or let's look at something beefier

Buying Group:  $2222.99 

Web Pricing:   $2279.99

HP

Smart Buy ProLiant DL380 G6 - 1x Quad-Core Intel Xeon E5520 2.26GHz Rack Server - 4GB RAM, no HDD, SATA DVD-RW, Gigabit Ethernet, Integrated ATI ES1000, Smart Array P410i

1x Quad-Core Intel Xeon E5520 2.26GHz, 8MB L3, 4GB PC3-10600E-9 DDR3 SDRAM, no HDD, SATA DVD-RW, Integrated ATI ES1000, 2x NC382i Multifunction Gigabit NIC, Smart Array P410i/256MB Controller, 460W CS HE PS, iLO2, no OS Installed

PC Mall Part #: 7868407       Mfr. Part #: 470065-153