Judging by the assembly in the pics, you are hunting the knuckle, bearing and hub. Best bet for the $$ is a scrap yard, aka a You Pull It. for a TDI you are looking for either 2.0 gasser or TDI bits. The 1.8T and VR6 are set up for different( larger ) brakes.
In order to get a car back on the road quickly, re-bearing the assembly. That is further easier if you go and get a new hub( say from IDParts ), along with a bearing. If you need the knuckle too...back to the scrap yards. You will probably find having a strut replacement tool that spreads the knuckle helpful.
Search up bearing replacement vids on u-tube, or with google to find posts here; a member here, Scurvy has written a very good set of instructional posts...google will turn them up.
cheers,
Douglas