### 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 make higher profits. In fact, the cost of raw materials will not exceed RMB 3 or RMB 4.
### Errors: There is a minor error of incorrect translation has stylistic problems at "make higher profits". There is a minor error of incorrect translation is missing content from the correct translation at "will not exceed".

### 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.