Learn Farsi: هیچ‌کس این کالا را اصلاً نمی‌خرد.

The word اصلاً (aslan) is built from the Arabic loanword اصل (asl), meaning "root" or "origin". The symbol at the end is an Arabic suffix called tanvin, which is pronounced "-an". In Farsi, adding this "-an" ending to certain words turns them into adverbs. Here, it changes "origin" into "at all" to emphasize the negative verb.

Why is the verb نمی‌خرد negative ("doesn't buy") when the English translation says "No one buys"?

Farsi uses a double negative structure. Whenever you use a negative word like هیچ‌کس (nobody / no one) or هیچ (none), the main verb of the sentence must also be negative. Literally, the sentence is saying "Nobody doesn't buy this product at all."

Why is را placed right after کالا?

The word را is the specific direct object marker. Since the sentence specifies exactly which product is not being bought by using "this" (این کالا), the product is a specific object, so it must be immediately followed by را.

Does اصلاً always mean "at all"?

In sentences with a negative verb (like this one), it translates perfectly to "at all" or "whatsoever" to make the negative meaning stronger. If you use it as a one-word answer to a question, it means "absolutely not" or "never".