I haven't found a cheaper 16 port Gigabit Ethernet switch than this Netgear. This 19" rack or desk mountable switch has 16 copper ports and two SFP GBIC ports. The GBIC ports are shared with copper ports 15 & 16 - so you get to use either or, not both, which is a bit of a shame - but they do say it...
Cheap; Easy to configure
SFP GBIC ports are shared with copper ports; loud fan