Bsyexcellent via Amazon offers this TEC1-12706 Thermoelectric Peltier Cooler for $2.80 with free shipping. That's the lowest total price we could find by a buck. It measures 40mm x 40mm x 3.6mm and features a QMax rating of 92-watts.
Fry's Electronics offers the AMD Athlon 5350 Quad-Core 2.05GHz AM1 Processor, model no. AD5350JAHMBOX, for $49 with free shipping. (Amazon has it for the same price.) That's the lowest total price we could find by $11. It features a 2MB L2 cache and AMD Radeon R3 graphics.