Hi, from my parted out Bike Friday (so minimal riding on this travel only bike...parts are fresh...nearly new...200 or less miles on em):

1. 2009 Ultegra rear derailler (10 speed): Nashbar has it new at $125 for similar one. $50 plus shipping.
2. 2009 Ultegra brake calipers: Nashbar has at $199...$80 plus shipping.
3. 105 braze on front derailler (good condition, not as pretty and fresh as #1 and #2): $15 plus shipping.

Thanks.