Yes, you should think about how much you are worth, and aim for that pay. However, in hourly positions, you don't really have the option to negotiate. They may ask what type of pay you are looking for, but usually what you say doesn't matter because they already have a determined pay rate.
According to the latest estimates, the cost for taking the HESI exam can range anywhere from $35 to $70. Costs vary according to the institution administering the test and you should contact your chosen location for details on this.
The IELTS Exam Usually Costs About $225. Unfortunately, each test center sets its own fee, so there is no one single answer to how much the IELTS costs. However, most IELTS testing centers now charge around $225 to sit for the exam. It was about $210 until early in 2015. While a $225 fee is the normal amount that gets charged, though, some testing centers may be lower or higher.