This is the 1265th most frequent Japanese word.
売れ
"売れ" means "to sell" or "be sold."
売れ is used in its negative potential form, questioning the reason for the lack of sales for the product.
どうしてあの商品はあまり売れないのですか。
Why doesn't that product sell much?
売れ is used as a verb in its potential form, indicating the ability or success of the product being sold.
この商品はよく売れています。
This product sells well.
売れ is used in its past tense, signifying the album was successfully sold quickly upon release.