$7.99 for less than 100 pages for each installment?

Star Trek The Next Generation: Slings and Arrows, Book 1: A Sea of Troubles - J. Steven York, Christina F. York

I got this for $1.99 on sale hoping to buy the others as well after reading it. The rest of the series has gone back to normal price at $7.99 per short story! At under 100 pages each, there is no way to justify the price... Very disappointing.

 

The story was interesting and well worth $1.99 but I will not continue reading the other installments and $7.99. There is no way to justify this price.