ABSOLUTELY!! exam krackers is REALLY good. they explain things differently from the kaplan one, and in many instances, they make things more clear
the whole set is really nice...the quality of the paper they use, the color images etc. i don't plan on selling this set even though i only bought it about 6 months ago and i won't need it again for the PCAT
i just checked amazon and they do state the edition...scroll down to "product detail". i checked on a full set listing
if it matters any, i got a 90% on bio and 93% on chemistry on the august PCAT..i used both kaplan and the exam krackers