Okay, besides for the points, i got the regular points as well for each flight (besides the promo), which are 1000 per segment.
Yes, I was employed at the time, but toke off work.
I paid around EURO 4900 for all of them.
The reason why it was so cheap, is that the fuel charge wasn't invented yet, I booked in Feb, for May, and finally, i always booked tickets with 4 segments, such as paris-zurich-stuttgart and back, leaving more than a week between the out-and inbound flight. (once at destination, i had obviously a flight back, which was part of a different ticket)