I have a 98 GC8 WRX with stock suspension wanting to upgrade to coilovers, need help please

Hey guys, is it worth just buying these? I am using it for daily driving but I want something which is not going to kill the bank but still be decent quality. I am based is Australia. If anyone has better suggestions or if I should wait and save up for better quality ones, it would be appreciated.

http://www.ebay.com.au/itm/Adjustable-Coilover-Shock-Suspension-for-Subaru-Impreza-WRX-STI-GC8-92-00-Clear-/272483072015?hash=item3f7141b80f:g:TVIAAOSwjXRXaf3d