Starting this July in Japan, people began paying for bags at the supermarket as well.
Japanese supermarkets also started charging for plastic bags as of this July.
ーStarting this July in Japan, people began paying for bags at the supermarket as well.
「日本でもこの７月からスーパーでレジ袋のお金を払い始めました。」
began paying for bags at the supermarket「スーパーでレジ袋のお金を払い始めた」を使ってレジ袋の有料化を表現できますね。
ーJapanese supermarkets also started charging for plastic bags as of this July.
「日本のスーパーもこの７月からレジ袋の料金を請求し始めました。」
started charging for plastic bags「レジ袋の料金を請求し始めた」＝「レジ袋が有料になった」と言えますね。
as of ... で「…現在・…を以って」
ご参考まで！
カナダ 
