A COLLECTION by JOSH GROBAN has sold 240,000 copies in 6 countries. The album sold best in United Kingdom (100,000 copies), France (75,000 copies) and Sweden (20,000 copies).
A COLLECTION certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Denmark |
15,000 | 1x Gold | 2009 |
Denmark Sales: 15,000
Certification / note: 1x Gold
Certification Date / sales as of: 2009
|
 France |
75,000 | 1x Gold | 17 December, 2008 |
France Sales: 75,000
Certification / note: 1x Gold
Certification Date / sales as of: 17 December, 2008
|
 Ireland |
15,000 | 1x Platinum | 2008 |
Ireland Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2008
|
 New Zealand |
15,000 | 1x Platinum |
New Zealand Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 Sweden |
20,000 | 1x Gold | 22 December, 2008 |
Sweden Sales: 20,000
Certification / note: 1x Gold
Certification Date / sales as of: 22 December, 2008
|
 United Kingdom |
100,000 | 1x Gold | 12 December, 2008 |
United Kingdom Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 12 December, 2008
|
| Total sales | 240,000 | (in 6 countries) |
Total
Sales: 240,000
(in 6 countries)
|
Year-end chart performance for A COLLECTION
| Chart 2008 | Rank | Sales |
 Dutch Albums (Album Top 100) |
74 | |
| New Zealand Albums (RMNZ) |
32 | |
 Norwegian Albums (VG-Lista) |
32 | |
| Swedish Albums (Sverigetopplistan) |
66 | >20,000 |
| UK Albums (Charts Plus) |
112 | |
| Chart 2009 | Rank | Sales |
 Belgian Albums (Ultratop Wallonia) |
55 | |
| Danish Albums (Hitlisten) |
80 |