To drag and drop your own samples you need to make sure you're using the patch at /Instruments/User/User Sources.nki.
Please also make sure you are using AIFF or WAV files as these are the only accepted formats in Kontakt. Please note that in Ableton, imported audio is amended with metadata that makes it unreadable by Kontakt. It's best to import from you OS file browser in this case.
We don't offer any seasonal sales (such as black Friday). We only offer sales when we release a new instrument, which typically only includes that instrument, plus any bundles it is part of.
On this occasion, it was not possible to incorporate importing your own samples for SPECTRES. At the moment we do not know whether it will be possible to implement this functionality in future.
However, there is a vast and varied library of source material creating endless possibilities in sound design, which we consider to be the bulk of the value. We've had users initially express concern about the lack of user sample support, but then come back to us later saying they simply don't need it!