WHY TRY HARDER - THE GREATEST HITS by FATBOY SLIM has sold 357,500 copies in Australia, Ireland, New Zealand and United Kingdom.
WHY TRY HARDER - THE GREATEST HITS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Australia |
35,000 | 1x Gold | JULY 2006 |
Australia Sales: 35,000
Certification / note: 1x Gold
Certification Date / sales as of: JULY 2006
|
 Ireland |
15,000 | 1x Platinum | 2006 |
Ireland Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2006
|
 New Zealand |
7,500 | 1x Gold |
New Zealand Sales: 7,500
Certification / note: 1x Gold
Certification Date / sales as of:
|
|
 United Kingdom |
300,000 | 1x Platinum | 17 August, 2007 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 17 August, 2007
|
| Total sales | 357,500 | (in 4 countries) |
Total
Sales: 357,500
(in 4 countries)
|
Year-end chart performance for WHY TRY HARDER - THE GREATEST HITS
| Chart 2006 | Rank |
| UK Albums (Charts Plus) |
85 |