How many sets of plugs

[Mikey22]

How many sets of spark plugs have people gone through with their rotaries?
 
I\'ve had mine a year and its not been off the drive much (due to repairs etc) and ive just managed to foul my second set of sparks and at £50 a set its not going down well lol.
 
So just curious if this is easy to do or am i just jynx\'d? lol