He didnt for plymouth after one race was it?

It did vary from event to event, depending on size of capacity, and whether a full house could be expected.... The Speedway Star published the costs a few years ago and it started, I think, around £200k up to almost £300k... The rights owners getting the money as they had paid the FIM for the rights... With Cardiff being ran by the GP owners themselves given the big income possible from that event.. If the promoters have paid half a million for both meetings then they should still do more than OK from this weekend...

You maybe right but not quite.  6500 is the maximum capacity for the NSS.  Find a facility with a larger capacity and the fans will come. 

Around 3000 are the £69 ones so it was a guestimate at an overall average.. If it is higher then even better for the promoters of the event...

But some of the grandstand seats are £150 😲

Don't they have to pay the FIM to stage the GP, a very tidy sum as well?