However, her book "Call Me Crazy" - which was originally published in September 2001 - has been out of print for years.
[Ads /]
Copies of the book currently on sale on Amazon have been rebranded as collectibles.
The memoir details Heche's lifelong battles and copies are now reportedly selling for prices ranging from $300 to $950.
Heche, whose dramatic Hollywood rise in the 1990s and accomplished career contrasted with personal chapters of turmoil, died of injuries from a fiery car crash in Mar Vista. She was 53.
[Ads /]
It's unclear if she was working on another book before her death.
The Associated Press contributed to this report.