The charging standard of paper duplicate checking varies according to the duplicate checking system, paper type and duplicate checking times. Generally speaking, there are two forms: charging by article and charging by text.

1 Charge by article: common paper duplicate checking systems such as HowNet, VIP and Wanfang. Prices usually range from tens to hundreds of yuan, depending on the type of paper and the number of duplicate checks. For example, the duplicate checking price of HowNet is usually 2 10 yuan/article, the duplicate checking price of master's and doctoral dissertations is 300 yuan/article, the title periodical papers are 55 yuan/article, the small decomposition detection is 58 yuan/article, and the large decomposition detection is 120 yuan/article.

2 Charge by the number of words: For example, the price of paper-based duplicate checking system is usually between 1.5 yuan/thousand words and 30 yuan/ten thousand words, which varies according to the length of paper and the number of duplicate checks.

In addition, some platforms also offer the first free duplicate checking opportunity, such as paperfree and papertime. Generally speaking, the specific charging standard needs to be inquired according to factors such as platform and paper type.