readings - Pronunciation of 家 in ...家ちんも安い

Here's the actual sentence:

私の部屋は、家ちんも安いし、駅にも近くて便利です。

How do you read '家ちん' and what does it mean? It's most likely that ちん is usually written in kanji since I got the sentence from a Japanese textbook for beginners.

Answer

It's pronounced やちん, and written 家賃 if using all kanji. It means "rent", as in "the rent for this place is expensive".