你很廉价用英文怎么说

You can say someone or something is "inexpensive" in Engpsh.

The word "inexpensive" comes from the prefix "in-" meaning "not" or "opposite of" and "expensive" which means costly.

Example in a sentence:

These shoes are inexpensive. (这些鞋很便宜。)
I'm looking for an inexpensive hotel for my trip. (我正在寻找一家便宜的酒店。)
The store had a wide selection of inexpensive clothes. (这家商店有各种各样的便宜衣服。)