Please read that link again. That manual explains everything you need to know for the DAT.
- No age limits. No U.S. citizenship requirements.
- You don't need  a bachelor degree to take the DAT. Most test takers are 2nd/3rd year undergraduate students.
- You don't need any other test results to apply for the DAT.
- Once they verify you're eligible to take the DAT. You'll have about 6 months to register for the test date of your choice.

Also check out this link....I could easily found it on google using this keyword "DAT exam fee".
http://crushthedatexam.com/dental-admission-test/

Hope this helps. Best of luck!