Neil , many different ways to go for ecus these days ! I gave £600 for my l8 with super 8 tho 2 years ago , depends what you want tho really , The secs ecu lets you use 4 high flo injectors , if you can get one .Stu @Msd has some high flow tests going on with lambda l8's as well .
Depends what the e-bay item gets up to !
Cheers
Tony