http://www.consumerinforeport.com/baby_products/baby_carriers/theodorebean_front_carrier.htm
http://www.epinions.com/review/kifm-Baby_Equipment-Carriers-All-Theodore_Bean_Micro_Mesh_Carrier_1MNBL/content_103191383684
See the above links to see why this should be your carrier of choice.
Retails for $90 plus taxes
Asking: $35 o.b.o.