Learn Swedish: Ett tiotal fyndjägare väntade på öppningen. - Around ten bargain hunters waited for the opening.

Ett tiotal uses the neuter suffix -tal to create a collective noun meaning an approximate amount. While tio means exactly ten, ett tiotal translates to around ten or a dozen or so.

Why is there no word for of between ett tiotal and fyndjägare?

In Swedish, collective numerical nouns like ett tiotal or ett hundratal act directly as quantifiers. You place them immediately before the plural noun they modify, without needing a preposition like av in between.

Is fyndjägare singular or plural here, and how can you tell?

It is plural. Swedish nouns ending in -are that describe people, like jägare (hunter), have the exact same form in both the indefinite singular and the indefinite plural. We know it is plural here because it is quantified by ett tiotal.

I am tempted to use för to say wait for. Why does the sentence use på?

The verb att vänta (to wait) is always paired with the preposition på when you are waiting for someone or something. It is a fixed Swedish expression, so translating for directly as för will sound unnatural to native speakers.