A CURIOUS THING by AMY MACDONALD has sold 1,000,000 copies in 29 countries. The album sold best in Germany (400,000 copies), United Kingdom (100,000 copies) and Switzerland (60,000 copies).
A CURIOUS THING certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Austria |
20,000 | 1x Platinum | 16 November, 2011 |
Austria Sales: 20,000
Certification / note: 1x Platinum
Certification Date / sales as of: 16 November, 2011
|
 Belgium |
30,000 | 1x Platinum | 2010 |
Belgium Sales: 30,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2010
|
 Germany |
400,000 | 2x Platinum | 2011 |
Germany Sales: 400,000
Certification / note: 2x Platinum
Certification Date / sales as of: 2011
|
 Switzerland |
60,000 | 2x Platinum | 2010 |
Switzerland Sales: 60,000
Certification / note: 2x Platinum
Certification Date / sales as of: 2010
|
 United Kingdom |
100,000 | 1x Gold | 19 March, 2010 |
United Kingdom Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 19 March, 2010
|
 Europe (IFPI) |
1,000,000 | 1x Platinum | 2012 |
Europe (IFPI) Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2012
|
| Total sales | 1,000,000 | (in 29 countries) |
Total
Sales: 1,000,000
(in 29 countries)
|
Year-end chart performance for A CURIOUS THING
| Chart 2010 | Rank | Sales |
| Austrian Albums (Ö3 Austria) |
15 | |
| Belgian Albums (Ultratop Flanders) |
13 | |
| Belgian Albums (Ultratop Wallonia) |
26 | |
 Dutch Albums (Album Top 100) |
31 | |
 Finnish Albums (Suomen Virallinen Lista) |
50 | 8,857 |
 French Albums (SNEP) |
153 | |
| German Albums (Offizielle Top 100) |
6 | |
| Swiss Albums (Schweizer Hitparade) |
2 | |
| UK Albums (Charts Plus) |
61 | |
| Chart 2011 | Rank | Sales |
| German Albums (Offizielle Top 100) |
80 |