The idiom "two a penny" means that something is very common or easily available, and therefore not very valuable or special. It is used to describe things that are so common that they are not worth much.
For example, if someone says "Those cheap toys are two a penny," it means that they are very common and not worth much money. Similarly, if someone says "There are two a penny street performers in this city," it means that there are many street performers and they are not very unique or special.
The phrase "two a penny" is often used to describe things that are not rare or valuable, and can be used in both formal and informal situations. It is a slang phrase that is commonly used in British English, but may not be as well known in other English-speaking countries.
• Apples are two a penny at the farmers market.
• I'm not impressed with this job offer, software developers are two a penny these days.
• It's no wonder these cheap toys break easily, they are two a penny.
• The internet is full of self-proclaimed experts, bloggers are two a penny nowadays.
• After traveling to many different countries, I've realized that beautiful beaches are two a penny in the world.
• In my city, coffee shops are two a penny, you can find one on every corner.