These preferences aren’t available in preferences panel, but you can edit them from console.
They’re are advanced preferences useless for a lot of users.
You can edit them with the following command:

DVD Hunter
defaults write org.JAres.Hunter\ Suite.Dvd\ Hunter [Preference Specific Part]
Game Hunter
defaults write org.JAres.Hunter\ Suite.Game\ Hunter [Preference Specific Part]
Book Hunter
defaults write org.JAres.Hunter\ Suite.Book\ Hunter [Preference Specific Part]

No Case Modification To Suggestions

noCaseModificationToSuggestions -bool yes
The default value of this preference is no: the suggestions will have the first letter of each word majuscule.
If you select yes instead the suggestions will be exactly the same you wrote in your items.

Select Title Field When Creating New Item

selectTitleFieldWhenCreatingNewItem -bool no
By default the Hunter Suite will select the title field when you create a new item. This behavior can be annoying when for example you’re creating items by specifying their UPC.
If you disable it the focus in info window will not change when you add an item.

Disable Autocomplete After Barcode Reading

disableAutocompleteAfterBarcodeReading -bool yes
The Hunter Suite when you finish scanning a barcode of an item will immediately begin to autocomplete.
By editing this preference you can change this behavior.

Set date acquired and location when removing item from Wishlist

setDateAcquiredAndLocationWhenRemovingAnItemFromWishlist -bool yes
If you enable this option when you remove an item from wish list (using the function present in right click menu) HS will set the Date acquired to current date and the Location to the default values specified in preferences.

IMDB Url

imdbUrl www.imdb.com
You can edit the url of imdb site opened when you select "Open IMDB". This options can be useful for non english users, which can specify the localized version of IMDB site to open.