Here is my complete shopping list from panel to power supply...

Circuit Breaker to match your power panel
http://www.ebay.com/itm/NEW-SQUARE-D-HOM230CP-HOMELINE-30-AMP-DOUBLE-POLE-CIRCUIT-BREAKERS-6721344-/311302683815?epid=691118573&hash=item487b15fca7:g:fYcAAOSwPYZU7QzP

Some wire

A Device box
http://www.ebay.com/itm/Madison-Electric-MSB1G-One-Gang-Device-Box-with-Depth-Adjustable-/112438725322?hash=item1a2ddecaca:g:YFgAAOSw1x1UP4hK

An outlet
http://www.ebay.com/itm/Pass-Seymour-locking-receptacle-L6-30R-MADE-IN-U-S-A-30-amp-250V-twist-lock/390917364485?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

Outlet cover
http://www.ebay.com/itm/NEW-LEVITON-Commercial-1-Gang-Stainless-Steel-Power-Outlet-Wall-Plate-84020-040/352146065381?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

APC 4-outlet PDU
http://www.ebay.com/itm/APC-AP9570-Basic-Rack-Power-Distribution-Unit-PDU-1U-208V-30A-Rack-Mountable/391768769897?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

Power cords
http://www.ebay.com/itm/Monoprice-3ft-16AWG-Power-Extension-Cord-Cable-3-Conductor-PC-Mon-C13-C14-Black/371192776255?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649


Based on the cost of circuit breaker, wire and outlet the PDU would be cheaper.