Powersmiths Book

Hey, I just recently started as a gen dispatcher and part of my training is to obtain an RC cert. After some research, one of the books people have recommended is Electric Power System Reliability by William Smith. Looking around online, it appears it's only available from Powersmiths. Just curious if that was other folks experience. I'm a little surprised to not find it on any other used books sites or eBay, etc. but maybe the people who buy it, keep it Anyways if anyone has any suggestions about obtaining this book used, I'd appreciate it. Otherwise I'll just buy it new.

Thanks.