#5 and #6 have signed retailer incentives but again, there is no indication (beyond what I assume was the initial solicitation) that these exist. I'm afraid FMP overestimated the memory of collectors and with no huge push of reprints of the first series, only Mr. Miller's die hard fans really took interest. It's a shame, the first series was mind blowing and this was a solid follow up for the first 2 books, can't say on the rest as it has been so slow to see print that even I lost interest.