WTB: Commuting parts, 7/8 speed shifter and derailleur

[Carlin]

Hi,

Wanted to buy

Item: Shimano 7/8 speed shifter.
Location: Sydney
Item Condition: Working
Price and price conditions: $10 depending on item.

Item: Shimano 7/8 speed rear derailleur, road or mountain-bike.
Location: Sydney
Item Condition: Working
Price and price conditions: $10 depending on item.

I'm really after a shifter mostly, but if anyone has a derailleur in working condition that would be great too.

Thanks,
Carlin