You only have to keep records for five years I think, perhaps seven years for business. Further back would make it difficult to defend why decisions were made.
A government that is spending twenty billion on Snowy 2.0 should not worry about the cost of interventions, or of anything really. Just tip the purse on the floor.
Pretty normal price these days. Sandwiches and coffee for two runs to more than $40 around here. We live in Central Vic where the tourists come from Melbourne. Add 15% on Sundays and public holidays.