300円のプランに二つの内容が加わります。
【1】作業途中の作品を一部公開（線画やラフ絵など）
→途中段階でもいち早く先の作品を見てみたいという方にお勧めです。
【2】没絵の投稿
→こちらに関しては投稿頻度は少ないです。
【3 】キャラ差分

The 500 yen plan is a 300 yen plan with two items added.
[1] Part of the work in progress will be released (line drawing, rough drawing, etc.)
→Even if it is a line drawing or a rough drawing, it is recommended for those who want to see new works as soon as possible.
[2] Posting rejedcted paintings
→Posting frequency is low in this regard.
［3］character difference