2-2.5 Buds? No, not really.

This'll be my first suggestion, any suggestions or tips are welcome.

Proof:

1. Sold for 1 Bud: http://www.tf2outpost.com/trade/14319845

2. Person who bought it at a Bud resold for 1.5 Buds: http://www.tf2outpost.com/trade/14320219

3. Current person who owns the same Virus Doctor from 1. and 2. is selling for 35 Keys: http://www.tf2outpost.com/trade/14430923

All trades shown are within 5 days as of today.

The other Orbiting Fire Virus Doctor on Outpost hasn't sold in two months, but when it did, it sold for a Blizzardy Stormy Tough Guy's Toque + 3 to 4 Keys in sweets (~2.25 Buds, possibly less): http://www.tf2outpost.com/trade/11400385

Range should go down to 1.5 to 2 Buds.