I got a kit from Germany (ebay) for 14€ posted. its a Turkish made kit. (came inside a plastic sealed bag)
I wasn't satisfied so I searched for a Bosch repair center in my area, there is one 7Km from me...
I got the original Bosch kit, from Bosch themselves for 11€... the next morning!
but yeah, it doesn't bring the front seal nor the bushing

the seals themselves don't seem to differ, but for less, I could get the original