Series 1 and Series 2 tails are currently on sale -- only at the Mer Betta main store. These are the tails that launched the Mer Betta brand in August 2007; they were upgraded to version 2 in April 2008.
Series 1 tails are marked down to 300L and will be available only until Jan 31:
Mer Betta Amphitrite Cream Green v2c
Mer Betta Atargatis Signature Blue v2c
Mer Betta Galene Orange v2c
Mer Betta Tethys Red Crown v2c
Series 2 tails are marked down to 400L and will be available only until Feb 15:
Mer Betta Eione Midnight v2c
Mer Betta Ianthe Green Crown v2c
Mer Betta Kalypso Gold v2c
Mer Betta Rhodea Dark Red v2c