Harganya nampak rendah, rupanya harga minta itu tinggi.

In harganya, the ending -nya usually means its, his/her, or sometimes just makes the noun more definite, like the in English.

So harga = price
and harganya can mean:

• its price
• the price
• the price of it/of that thing

In this sentence, harganya nampak rendah is naturally understood as the price looks low or its price looks low.

Yes. Nampak often means to appear, to seem, or to look.

So:

• nampak rendah = looks low / seems low

This is talking about appearance or first impression, not necessarily the real situation. That is important because the second clause corrects that first impression.

Compare:

• Harganya rendah = The price is low
• Harganya nampak rendah = The price looks low / seems low

The second one is less definite.

Here, rupanya means something like:

• it turns out
• apparently
• as it turns out
• in fact

It introduces a result that is different from what you first thought.

So the sentence has this structure:

• At first glance: Harganya nampak rendah = the price seems low
• Actual situation: rupanya harga minta itu tinggi = but it turns out the asking price is high

This is a very common use of rupanya in Malay conversation and writing.

Harga minta means asking price — the price the seller wants.

Breakdown:

• harga = price
• minta = ask/request

Together, harga minta is a set phrase used especially when talking about selling, property, cars, or negotiations.

Examples:

• Harga minta rumah itu terlalu tinggi.
  The asking price of that house is too high.

• Berapa harga minta penjual?
  What is the seller’s asking price?

So in your sentence, harga minta itu tinggi means that asking price is high or the asking price is high.

In Malay, demonstratives like ini and itu usually come after the noun.

So:

• rumah itu = that house
• harga itu = that price
• harga minta itu = that asking price

This is normal Malay word order.

English: that asking price
Malay: harga minta itu

Not: itu harga minta in this sentence.

Malay often does not use a verb like is/are in simple statements with adjectives.

So:

• harga minta itu tinggi literally = that asking price high
• natural English = that asking price is high

This is completely normal in Malay.

Other examples:

• Dia tinggi. = He/She is tall.
• Rumah itu besar. = That house is big.
• Harga ini murah. = This price is cheap.

You do not need adalah here.

This is a very good question, because both can relate to price.

• rendah = low
• murah = cheap/inexpensive

For prices:

• harga rendah = low price
• harga murah is less standard than harga rendah, though people may still understand it
• murah is more often used for the thing itself:
  Rumah itu murah = That house is cheap

So in this sentence, harganya nampak rendah is a natural way to say the price looks low.

A useful contrast:

• Harga rumah itu rendah. = The house price is low.
• Rumah itu murah. = The house is cheap.

Yes, it is understandable and fairly natural, especially if the speaker wants a contrast between seems low and actually high.

However, some learners may find the second part slightly compact. Depending on context, a speaker might also say:

• Harganya nampak rendah, rupanya harga minta itu tinggi.
• Harganya nampak rendah, tetapi rupanya harga minta itu tinggi.
• Nampak macam murah, rupanya harga minta tinggi.
• Harganya nampak rendah, rupanya harga yang diminta itu tinggi.

That last version, harga yang diminta, is a little more explicit and may feel clearer to some learners.

So your original sentence is fine, but there are other natural ways to express the same idea.

Yes, both refer to price, but they present it from two slightly different angles:

• harganya = the price / its price as it first appears
• harga minta itu = that asking price specifically, meaning the seller’s stated price

The sentence is creating a contrast:

• first impression: the price looks low
• reality: the asking price is high

So even though both involve price, the second phrase is more specific.

The comma separates two linked ideas:

1. Harganya nampak rendah
   The price looks low

2. rupanya harga minta itu tinggi
   it turns out the asking price is high

This kind of structure is common when the second part corrects or overturns the first impression.

In English, you might translate the rhythm as:

• The price looks low, but it turns out the asking price is high.

Even though there is no tetapi in the original sentence, the contrast is already clear because of rupanya.

Yes. Rupanya is very flexible and often means:

• apparently
• it seems
• it turns out
• as it turns out

Its exact English translation depends on context.

Examples:

• Rupanya dia sudah tahu.
  It turns out he/she already knew.

• Rupanya mereka tak datang.
  Apparently they’re not coming.

• Saya ingat dia marah, rupanya dia bergurau.
  I thought he was angry, but it turned out he was joking.

So in your sentence, rupanya signals that the speaker’s earlier impression was wrong.