1. Available on its own or paired with the speakers for an extra $400.

2. For a couple checking two bags, that means an extra $100.

3. Adding minor league games to your subscription will cost you an extra $20.

4. Speaking of batteries, extra original manufacturer batteries can be purchased for only $10.

5. Quite a bargain considering the gold option on Apple Watch costs an extra $9,000.

6. That gives you an extra $1,000.

7. Businesses with less than 20 staff were given an extra year, until June 30 2016.

8. Estimates have suggested an extra 450,000.

9. The service is included at no extra charge with the E3 and E4 editions of Office 365.

10. There will also be an app store soon for users looking for extra content.

11. For that, you might want to shell out the extra $150 for the Core i7 model of the Yoga 3 14-inch.

12. It called on people to use public transport and said extra bus services were being provided.

13. Google will get extra information by having its own phone.

14. The extra cost to add the needed equipment can be substantial.

15. Many offer their apps for free and charge for extra features.