This circle has removed many of their works from dlsite, and these works will be lost even for those who had purchased them (and no refund of course)

As such, I do NOT recommend buying their stuff from dlsite (or any online site for that matter). These are not cheap (even more expensive than a normal manga), and the fact that they just decided to remove them without bother to notify their buyer pisses me off.

If you still want to purchase, make sure to save them to your hardware/cloud or upload them so you can still access what you bought in the future.