You're right TubbyT. I was having a chat with my Aprilia dealer (whilst bike's in for new fork seals) and he reckons all in about £70. The only extra bits in the kit that AF1 supplied, apart from screws etc, are Dorsoduro bar ends and a couple of brackets to make them fit to the T; the brackets are about 2"long with a hole each end for fixing one end to handguard, the other to the mirror bottom assembly.
If you can get hold of those brackets you're quids in.
In the meantime, AF1 are doing pretty well out of it.
-5c on the ride home from work earlier and they made a huge difference in that temp.
Maldroid, any chance of a piccie of the brackets you're referring to ?