£15.00 admission gives the promoters £12.50 after VAT.
So 880 paying adults would be required not 733
On top of the riders direct costs there is also.
- cost of Fuel, Tyres, insurance and officials.
Before all of that there is the fixed cost of stadium hire/running which in some cases of hire does not include maintenance (shale to start with) or cost of power and replacement/repair (air fence?) parts
Bottom line, You need at the very least to double your projections of cash required to get remotely close to a being break figure, even for a promotion running at the lowest cost.
Put another way, if you want to pay riders the level you suggest, in a full speedway meeting then you need £17k/£20k per meeting and hope there are no rain offs. then you may break even.