You can go to Veloplus in Wetzikon
www.veloplus.ch
buy the missing ling or connecting pin and do it yourself on the customer's workshop.
The costs involved are
1. train ticket for your bike ( 10-15 CHF )
2. train ticket for yourself
3. the missing link or closing pin, they are sold in 6 packs so you can't buy only one, the pack for a 10 speed chain costed me CHF 18 ( I have now 5 pins for sale or reserve )
maybe it would be cheaper at a local bike shop.
The only thing is that bike shops are usually overbooked at this time of the year and even if the jos is quick done, they don't like to put you before their other 15 customers on the waiting list.