### Chinese: 主要目的是为了获取更高的利润，其实他们的原材料增加的成本最多不会超过3、4元钱。
### English: The main purpose is to obtain higher profits, in fact, the cost of their raw materials increase will not exceed three or four dollars.
### Errors: There is a minor error at "of their raw materials increase will". There is a minor error at "four dollars".

### Improved English: The main objective is to gain more profits; the increased cost of raw materials is actually no more than 3 or 4 yuan.