I know you said home made, rather than ready made, but the Sharwoods Cantonese Cook In Sauce, in the 425g jar, is 3.5points for the whole jar, I have it on chips :|
It's bang on, just like the sauce in the WW curry.
As for homemade, I struggle with curry. I'm a "chuck in a bit of this and a bit of that" type of cook, can never make the same thing twice