Абонентська плата висока.

Yes. Абонентська плата is a very common fixed phrase meaning subscription fee, monthly fee, or service charge for being subscribed to a service.

Literally:

• абонентська = subscriber-related / subscription-related
• плата = fee, payment, charge

But in normal usage, you should learn абонентська плата as one unit.

Because in Ukrainian, the verb to be is usually omitted in the present tense.

So:

• Абонентська плата висока. = The subscription fee is high.

A word-for-word structure is closer to:

• Subscription fee high.

This is completely normal in Ukrainian.

In other tenses, a form of бути appears:

• Абонентська плата була високою. = The subscription fee was high.

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

Ukrainian adjectives change their endings to match the noun in:

• gender
• number
• case

Here:

• плата = feminine singular
• абонентська = feminine singular
• висока = feminine singular

That is why you see -а on both adjectives.

It is in the nominative singular.

This is the basic dictionary form of the noun, and it is used here because абонентська плата is the subject of the sentence.

The adjective абонентська is also nominative singular feminine to match it.

The predicate adjective висока is also in the nominative here, which is normal in this kind of present-tense sentence.

Yes.

The adjective високий means high or tall. Its form changes depending on what noun it describes.

Here are the singular nominative forms:

• високий = masculine
• висока = feminine
• високе = neuter

Because плата is feminine, you need висока.

Because Ukrainian has no articles.

So Ukrainian does not have direct equivalents of a and the.

That means:

• Абонентська плата висока. can mean The subscription fee is high
• and in some contexts it could also be understood more generally as A subscription fee is high

Usually the context tells you which meaning is intended. In English, we have to choose an article, but in Ukrainian you do not.

Yes, Ukrainian word order is more flexible than English, but the original sentence is the most neutral and straightforward:

• Абонентська плата висока. = neutral statement

If you change the order, you may change the emphasis:

• Висока абонентська плата. can sound like a high subscription fee as a noun phrase, or like a more emphatic sentence depending on context.

So for a basic learner, it is best to treat Абонентська плата висока. as the safest standard version.

Yes, висока is the most natural choice with things like:

• fees
• prices
• rates
• charges

So Ukrainian commonly says:

• висока ціна = high price
• висока вартість = high cost
• висока абонентська плата = high subscription fee

Дорога means expensive and is often used for things, services, or purchases more generally. It is not impossible in some contexts, but with a fee or tariff, висока is the standard, more natural collocation.

A rough Latin-letter version is:

abonentska plata vysoka

A few helpful notes:

• в is like English v
• и is not exactly English ee; it is a shorter, more central vowel
• ськ in абонентська is a tight consonant cluster, so try not to insert an extra vowel

For a learner, the main goal is to say it smoothly as three chunks:

• абонентська
• плата
• висока

It can do either, depending on context.

Like English is high, висока can describe:

• a general fact: The subscription fee is high
• the current situation: The subscription fee is high right now

If you want to make the meaning more specific, Ukrainian can add extra words such as:

• зараз = now
• дуже = very
• надто = too

For example:

• Абонентська плата зараз висока. = The subscription fee is high now.
• Абонентська плата дуже висока. = The subscription fee is very high.