Ella,
I did a quick search of my distributor and the best price I could find was $137.00 so you are doing well at £80.
From what I could tell, the same battery Works with:
Acer Aspire 1400.
Dell Smartstep 200n / Smartstep 250n
Fujitsu Amilo D6800 / Amilo D8800 / Amilo D8820
Hitachi Flora 270W NW8
You could check batteries for all the models above and you might find a better price.
Take Care,
Richard