You can buy "The Settlers History Edition" on Uplay.

The History Collection will include History Editions of all seven previous Settlers games, which includes gold versions of each game with all expansions, game improvements, and optimization for modern PC systems.

All games can be bought separately as History Edition.

The Settlers
The Settlers II
The Settlers III
The Settlers IV
The Settlers V
The Settlers VI
The Settlers VII

Just keep 10th anniversary on your list.
This can be bought at the Origin store too.

Woah not bad yeah editing