Is there kanji for しか as in
商品がひとつしかありません。
Is there kanji for しか as in
商品がひとつしかありません。
Is there kanji for しか as in. 商品がひとつしかありません。
No. There is no kanji for this usage of しか.
No evidence of a kanji for this しか can be found in any of the aggregated dictionaries: