Amazon offers the Dremel MultiPro 7.2-Volt Cordless Rotary Tool Kit
, model no. 7700-1/15, for
with free shipping. That's the lowest total price we could find by $44. It features two speed settings (10,000 or 20,000 RPM) and includes a 3-hour charger and 15 Dremel accessories.
Update: The price has increased to $34.99 with free shipping. Despite the increase, that's still a price low by $39.