Some recent panasonic auctions on eBay:

Ex-Pro® DMW-BCM13 Ultra White Series batteria 1350mAh Panasonic Lumix DMC-TZ37
GBP 8.59
End Date: Saturday Aug-23-2014 12:55:12 PDT
Buy It Now for only: GBP 8.59
Buy it now | Add to watch list