Well....breakers are always an option but not one I'd recommend for coils....
Not sure which year yours is Dave but here are some options...
1) Ducati Dealer
2) Bulk retailer - M&P for example have a 'budget' coil at £20 that looks similar to my 900ss coil but, you'd have to check it out....
http://www.mandp.co.uk/homepage.aspx 3) Specialist retailer...I've used Bosch coils in the past successfully from a specialist Diesel/auto electrical supplier - most big companies can supply equivalent items to original.
4) Aftermarket upgrade.....Dynatek coils are meant to be some of the best around...below is the application coil for my 93 900ss but they are £95 each I believe....TTS are the distributors for the UK I understand.
http://www.tts-performance.com/catal...roducts_id=437 So ....apart from checking with either a dealer or perhaps the original equipment manufacture (dont know who it is actually)...we have a range of roughly £50 to £200
Good Luck
PS....most dyna coils will need slight mounting mods to make em fit!