Celková cena je vysoká.

• celková = total / overall
• cena = price
• je = is
• vysoká = high

So the sentence is literally The total price is high.

Because they agree with cena, which is a feminine singular noun.

In Czech, adjectives must match the noun they describe in:

• gender
• number
• case

Here, cena is:

• feminine
• singular
• nominative

So both adjectives take the feminine singular nominative ending -á:

• celková cena
• cena je vysoká

It is in the nominative case.

That is because cena is the subject of the sentence: The total price is high.

Also, after je in this kind of simple descriptive sentence, Czech commonly uses the adjective in a form that matches the nominative subject:

• Cena je vysoká.
• Místnost je velká.
• Polévka je teplá.

Yes, vysoká literally means high.

Czech often talks about a price being high:

• Cena je vysoká. = The price is high.

This is very natural.

But Czech also often uses drahý / drahá / drahé for expensive:

• To je drahé. = That is expensive.
• Cena je vysoká. = The price is high.

These are similar in meaning, but not identical in structure:

• vysoká cena = a high price
• drahé zboží = expensive goods

It is not the most natural choice.

Czech normally says:

• Cena je vysoká. = The price is high.
• To je drahé. = It is expensive.

So for price, vysoká is usually the better adjective.

A native speaker is much more likely to say:

• Celková cena je vysoká.

than

• Celková cena je drahá.

In the present tense, Czech usually does use the verb být (to be) in normal sentences like this:

• Cena je vysoká.

So here, je is necessary.

Czech can sometimes omit forms of to be in special styles such as:

• headlines
• notes
• very informal fragments

But in a standard full sentence, you should say:

• Celková cena je vysoká.

Yes. Czech word order is more flexible than English because the endings carry a lot of grammatical information.

The neutral order is:

• Celková cena je vysoká.

But other orders are possible for emphasis:

• Cena je celkově vysoká. = slightly different meaning: The price is high overall.
• Vysoká je celková cena. = marked/emphatic
• Celkově je cena vysoká. = Overall, the price is high.

For a learner, the original sentence is the safest and most natural basic version.

They are related, but they are not used in the same way.

• celková = an adjective: total / overall

  • celková cena = the total price

• celkem = an adverb, often meaning altogether / quite / fairly

  • Celkem dobré. = Quite good.

• celkově = an adverb meaning overall / on the whole

  • Celkově je to drahé. = Overall, it is expensive.

So in your sentence, celková is correct because it directly describes the noun cena.

A simple approximate pronunciation is:

TSEL-ko-vaa TSE-na ye VY-so-kaa

A few useful points:

• c in Czech is pronounced like ts
• j is pronounced like English y
• e is usually like e in met
• y is a short vowel, somewhat like i in bit
• á is a long vowel, so hold it slightly longer

Stress in Czech is usually on the first syllable of each word:

• CELková
• CEna
• JE
• VYsoká

Yes, very common.

You will often see it in:

• shops
• invoices
• online checkouts
• travel bookings
• service quotes

It means total price, often as opposed to:

• základní cena = base price
• konečná cena = final price
• jednotková cena = unit price

So Celková cena je vysoká is a very natural sentence.

Yes.

• Cena je vysoká. = The price is high.
• Celková cena je vysoká. = The total price is high.

Adding celková makes the meaning more specific. Without it, the sentence is more general.

The dictionary forms are the masculine singular forms:

• celkový
• vysoký

In the sentence, they appear as feminine singular forms because they agree with cena:

• celkový → celková
• vysoký → vysoká

This is very common in Czech dictionaries: adjectives are usually listed in the masculine singular form.

The adjective endings would change to match the noun.

For example:

• celková cena je vysoká
  feminine singular: price

• celkový účet je vysoký
  masculine singular: bill

• celkové nájemné je vysoké
  neuter singular: rent

So the pattern stays the same, but the adjective forms change according to the noun.