The Lamp Room

Anyone know any alternative ballasts i can use to light 180w sox lamps? Im talking of the ballast and separate ignitor type that i can use the SX73 ignitor on? There is a Philips BSX180 ballast on ebay but the seller can fuck off with his £89 price for just the ballast i would rather bin the stubborn lamps than pay that??????? Anyone know of a close match ballast?????

I didn't realise 180w lamps could run on a choke & ignitor tbh. I thought they arc voltage was too high!
But there they are. £70 still probs a lot cheaper than they were new originally tbh.