Hi guys, I just check the manfuacturing cost with the PCB fabrication house. For small quantity, the cost for 7.3cm * 5.8 cm(Arduino Duemilanove) and 7.3cm * 5.3cm(Arduino Uno) are same with the price for 10cm * 10cm. The cost for 10.5cm * 5.8cm(Arduino Mega) is a little lower than 15cm * 10 cm. So, we may not offer the special price for Arduino Size.