hi there i just bought some t8 58 w digital ballist of ebay.so i went 2 check retail price on them and they were like 15 quid i got um 4 a fiver each .any how the site i look on was pretty cheap and had loads of the stuff u talking about Lamp Holders 2G11 (18w, 24w, 36w, 40w & 55w 4 Pin) - from nationallampsandcomponents.co.uk