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.
Costs of Gifted Testing. Testing can cost anywhere from $200 to $700. The average rate is between $500 and $600 and generally includes both IQ and achievement tests. The cost is the same whether the tester has experience with gifted children or not, so be sure to ask any prospective tester about his or her experience.