934だけど
NativeDSDに質問したら以下の回答が来て
ベストセラー100枚の20%割引情報くれたw
これは純粋な売り上げ上位100ではないし
そのうち案内あるかもだけどまあご参考まで

As far as I know the percentage deals have not changed in some time. It should be 50 euro = 10% and then 150 euro = 15% and then upwards from there.
However, let me point you into the direction of a 20% sale on our Best-Sellers here: https://www.nativedsd.com/information/positive-feedback-issue-100 It still runs for another 3 days :)