One here which seems one of the best prices I've seen:
Pro Alloy Motorsport - Alloy Racing Tanks - VAG 1.8T Baffled Sump
the pictured pro-alloy one makes me nervous of the rubber baffles only being retained by their 2 little "pips"
I have known 2 sumps of this "ilk" detach a rubber baffle, which unluckily for the owners got sucked into the oil pickup pipe, causeing loss of oil pressure and.... well, you can imagine.
SEAT Sport sumps, of which there are copies of, have a large full width rubber baffle which does not come off. This is the type I run and use, and they are now available thru backdraft motorsport