[raphdg]

No. If you buy a downloads pack, you have to use them within 12 months. After that period, they expire.

But once the illustrations are downloaded, you can use them as long as you want.

edit: for clarity

[biot]

Perhaps you should say "Must be downloaded within 12 months; perpetual license lets you use them for as long as you want."

[sebdursel]

Indeed good point, thanks for that!