This will probably only appeal to a minority so please don't vote cold if you have never heard of the Terrahawks - this is a cracking deal.
These are region 2 discs.
Vols 1-3, 4-6 & 7-9.
If you bought the complete series box set from Play it would set you back £33.99, it was posted here quite some time ago priced at £36.99http://www.hotukdeals.com/item/28413/terrahawks-complete-box-set-10-disc/
There is also the complete 'region 1' option from PlayTrade which is £14.37 delivered.