Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Season | Episodes | Series premiere | Series finale | Winning couple | Winning profit ( AUD ) | Host(s) | Judges |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 13.0 | 1June2003 | 17August2003 | Adam Thorn Fiona Mills | $156,000 | Jamie Durie | John McGrath |
| 2 | 26.0 | 18April2004 | 25July2004 | Andrew Rochford Jamie Nicholson | $78,000 | Jamie Durie | John McGrath |
| 3 | 9.0 | 22September2010 | 24November2010 | John and Neisha Pitt | $205,000 | Scott Cam | John McGrath Neale Whitaker |
| 4 | 51.0 | 20June2011 | 21August2011 | Polly Porter Warwick "Waz" Jones | $15,000 | Scott Cam Shelley Craft | John McGrath Neale Whitaker |
| 5 | 65.0 | 16April2012 | 1July2012 | Brad Cranfield Lara Welham | $506,000 | Scott Cam Shelley Craft | John McGrath Neale Whitaker Shaynna Blaze |
| All-Stars | 39.0 | 4February2013 | 20March2013 | Phil Rankine Amity Dry | $295,000 | Scott Cam Shelley Craft | Neale Whitaker Shaynna Blaze Darren Palmer |
| Sky High | 66.0 | 12May2013 | 28 July 2013 | Alisa and Lysandra Fraser | $295,000 | Scott Cam Shelley Craft | Neale Whitaker Shaynna Blaze Darren Palmer |
Question:
What season had a winning profit of $15,000?
Answer:
4.0