IMHO - it is pretty steep for 200 pages of light fluff. Are they the Nancy Drews? I used to buy them here and there before agency pricing when I could apply discount codes etc. But maybe they had significant cost in proving digital rights and getting an eBook formatted and produced. Or maybe they just want to gouge us all, who knows?
Have you seen the Cherry Ames books? $9.99!!!!
If they were reasonably priced I'd click the whole darn series but not at $10 each.