En tiu vendejo hodiaŭ estas bona oferto pri pano kaj fromaĝo.

Because Esperanto word order is fairly flexible.

Here, En tiu vendejo and hodiaŭ set the scene first: in that store, today. Then estas bona oferto gives the main statement: there is a good offer.

This is very natural in Esperanto. It is similar to English sentences like:

• In that store today, there is a good offer...
• Today, in that store, there is a good offer...

So the sentence is not unusual. It simply foregrounds the place and time.

Esperanto does not use a dummy subject like English there in existential sentences.

English says:

• There is a good offer.

Esperanto simply says:

• Estas bona oferto.

Literally, that is just is a good offer, but it naturally means there is a good offer.

So in this sentence, estas bona oferto is the normal Esperanto way to express existence.

En usually means in or inside, but in practice it can also correspond to English at with places.

So:

• en tiu vendejo = in that store or naturally at that store

A native English speaker may expect at that store, but Esperanto often uses en where English would use either in or at.

Vendejo is built from parts:

• vend- = the idea of selling
• -ej- = a place used for something
• -o = noun ending

So vendejo literally means a place for selling, which gives shop/store.

This is a very common Esperanto pattern. For example:

• lerni = to learn
• lernejo = school, literally place for learning

So vendejo is a good example of how Esperanto builds words very systematically.

Tiu usually means that, while ĉi tiu means this.

So:

• tiu vendejo = that store
• ĉi tiu vendejo = this store

If the meaning shown to the learner is that store, then tiu is exactly right.

Also, tiu can sometimes refer to a specific previously mentioned or identifiable thing, even if English might sometimes say that or the depending on context.

Yes, hodiaŭ can move around.

In Esperanto, adverbs like hodiaŭ often have flexible placement as long as the meaning stays clear.

For example, these are all possible:

• En tiu vendejo hodiaŭ estas bona oferto...
• Hodiaŭ en tiu vendejo estas bona oferto...
• Estas hodiaŭ bona oferto en tiu vendejo...

The version in your sentence sounds natural because it first gives:

1. place — en tiu vendejo
2. time — hodiaŭ
3. main statement — estas bona oferto...

Because oferto is not the direct object here. It is the subject of the sentence, even though it comes after estas.

In existential sentences like this, Esperanto does not use the accusative -n on the thing that exists.

So:

• estas bona oferto = there is a good offer

Also, bona matches oferto because adjectives agree with the nouns they describe.

Both are singular and not accusative:

• bona = good
• oferto = offer

If it were plural, you would get:

• bonaj ofertoj = good offers

Because Esperanto has la for the, but it has no separate word for English a/an.

So:

• oferto can mean an offer or just offer, depending on context
• la oferto means the offer

In this sentence, bona oferto means a good offer, and no article is needed.

That is completely normal in Esperanto.

Pri often means about, concerning, or regarding.

So oferto pri pano kaj fromaĝo means a good offer on bread and cheese, that is, an offer concerning those items.

English often says:

• an offer on bread and cheese
• a special on bread and cheese

Esperanto uses pri very naturally here.

Why not por? Because por means for, and that would suggest the offer is intended for bread and cheese, which is not the idea. The offer is about those products, so pri fits better.

Because they are being used as mass nouns, just like English bread and cheese often are.

So:

• pano = bread
• fromaĝo = cheese

Even though a shop may sell many loaves or many kinds of cheese, Esperanto commonly uses the singular for the general product category.

If you wanted to emphasize multiple individual items or types, you might use plural forms, but here the singular is the most natural choice.

No, because they are objects of the preposition pri.

In Esperanto, a noun after a preposition normally does not take -n just because it is related to the verb.

So:

• pri pano kaj fromaĝo = about bread and cheese

No accusative is needed there.

The accusative -n is mainly used for direct objects and for some motion-related expressions, but not after ordinary prepositions like pri.

Yes. Esperanto allows several word orders.

For example, these are possible:

• Hodiaŭ en tiu vendejo estas bona oferto pri pano kaj fromaĝo.
• Estas bona oferto pri pano kaj fromaĝo hodiaŭ en tiu vendejo.
• Bona oferto pri pano kaj fromaĝo estas hodiaŭ en tiu vendejo.

They all express basically the same idea, but the emphasis changes slightly.

The original sentence is a very natural one because it presents:

• location first
• then time
• then the existence of the offer

So it sounds smooth and idiomatic.