You need to ask yourself these two questions:
1. Do I need play equipment just to show there is some in the venue?
If the answer is yes, simply count the number of children in your venue on a regular busy day and multiply that number by AUD$2,000 to get an approximate budget.
2. Do I want play equipment that will enhance my business, provide a means to grow the business, improve the operation of the business, allow for more promotion possibilities and have a marketing tool that can directly show a return on my investment?
If your answer is yes, then your starting budget should be AUD $40,000 to $50,000. Size does matter.