Let me please explain again each order's items:
0€: Contains a free pre-booking number. No purchase required.
40€: Includes Jolla fan t-shirt which costs the whole 40€, and a free pre-book number.
100€: Includes a Jolla fan t-shirt which costs 40€, the other half which costs 60€, and a free pre-book number.
The 0€ and 40€ options are available worldwide, well, the 40€ is not available at all anymore. While the 100€ is only available in EU and other supported countries.