UExcel exam costs $220

[Sparklette]

> Excelsior will charge you $145 + $20 technology fee for their value package that comes with one free re-take.

so don't buy the value package
save $35                
its not much, but your thread title is COMPLETEY wrong

for example            
the abnormal psychology exam is $335 because its upper credit
https://www.excelsior.edu/exam/abnormal-psychology/

but calculus is $110            
https://www.excelsior.edu/exam/calculus/

sure, you still have to pay the testing center, but that's like complaining that CLEP and DSST exams aren't the advertised price because you have to pay extra to the testing center

The Uexcel pricing isn't consistent with which are UL and LL; I took 3 UL ones for my BALS and they were all $110. I got the practice test/retake package on one of them, though. You have access to the study guide before you sign up, which includes 10-20 sample questions....I used those as a barometer for if I wanted the additional practice quizzes.
I also found if you copy/Google one of the sample questions, you can find some free study flashcards with more of the questions (I'd caution about relying on the answers entered, though because some were clearly wrong....just use for the questions)
 
I didn't mind the testing center fee, because it was actually really nice to know I'd be able to take the exam at a specific time....the CC and university testing centers where I lived at the time were a crapshoot of being bumped/unable to secure a set appointment as a non-enrolled student.