In order to buy everything from the shop, you will need $30,000.
There are four categories (Pucks, Pins, Tables, and Frames), and each category has six item classes (Luxury, Vibrant, Speed, Tasty, Tiki, Pirate).
The breakdown of items that need to be purchased is as follows:
6 Pucks -- $1,250 each, $7,500 total
6 Pins -- $500 each, $3,000 total
6 Tables -- $2,500 each, $15,000 total
6 Frames -- $750 each, $4,500 total
To earn the needed $$, the other solutions have some good suggestions.