After contacting EVERY talent search listed at Davidson, we found our solution for the EXPLORE through the Belin-Blank Center's talent search:
http://www.education.uiowa.edu/belinblank/TalentSearch/Default.aspxThey will allow you to do the test at your school, provided you can get a teacher, principal, etc., to serve as proctor. This way you avoid the long travel & related costs. You should look into this as you'll avoid all the driving.
Familiar environment & quick commute vs. strange environ and mind-numbing travel there & back.
Total cost is $75 or so.
Win-win-win.