Learn Russian: В этом магазине всегда свежий товар.

English says "This shop has", treating the shop as a possessor. Russian treats the shop as a location, literally saying "In this shop [is] always fresh stock." The present tense verb for "is" or "exists" can sometimes be used, but it's completely omitted in simple descriptive statements like this.

Why is товар in the singular form here?

While English often uses plural words like "goods" or "products" for shopping, товар frequently acts as a collective noun in Russian. Using it in the singular is the standard way to refer to a store's overall merchandise, stock, or inventory.

Why does свежий end in -ий instead of the standard masculine ending -ый?

This happens because of the 7-letter spelling rule. After the consonants ж, ш, ч, щ, г, к, х, you must write и instead of ы. Since the stem of свежий ends in ж, the standard -ый ending changes to -ий.

Why are the words ordered exactly this way?

In Russian, the most important new information usually goes at the end of the sentence. The focus here is on the quality of the goods, so свежий товар comes last. Placing всегда at the very end (В этом магазине свежий товар всегда) would awkwardly shift the core emphasis onto the word "always."