Boiler went pop 5 days before christmas so took the opertunity to upgrade to an opentherm boiler and evohome.
This leaves me with 12 spare Stella Z TRVs and a spare boiler controler.
£30 per TRV
£30 for the controler (basically a dual realy with fail safe) This one: http://www.vesternet.com/z-wave-horstmann-z-wave-controlled-boiler-receiver-two-channels
Both supported by Autologs Stalla Z plugin. Been using them for about 2 years, saved me a bundle the first year i installed them
Offers welcome. Will stick it all on ebay if not sold here
There is a 13th TRV but the latches that hold that one on to the valve cracked. I designed and printed a replacement but its not perfect hence not happy to sell as working. If someone wants it then make an offer, if not it goes in the spare parts draw.