"This lunch costs sixty nine hryvnyas."

Translation: Цей обід коштує шістдесят дев'ять гривень.

[ofer1992]

Why is it цей and not це?

[Shady_arc]

As a modifier, цей behaves as an adjective and should reflect the gender/number of the noun it modifies. «Обід» is a masculine noun, hence цей, whereas це would be used for neuter.

Indeclinable це is also used independently in "This is" sentences and as an abstract "it / this / that" ("We finished the job. And this is good"). It is also used in sentences like «Кінь — це тварина» (mainly when you define one concept through another concept).

[nunes89]

Where can I find the declension of demonstratives pronouns? :) (це and то)

[Shady_arc]

Here they are: цей and той.