Liquid into Samhain

I think I have asked this before... maybe... What's up with all the liquid silver books being republished at samhain? Are they just being cleaned up editing wise and then printed? Do they have to sell a certain number to go to print or is it a sure thing? And why didn't LSB print them? Does LSB not do print? But most importantly... does it say if the book is expanded and worth rebuying?