Hello aia
La Nuit du Crépuscule and La vengeance de Dracula are common "modules" so they would not sell for more than 10€ normally (I think around 6-7€ each) but since they are in shrink, perhaps a little more.
Le rodeur de la lande is the rarer one. I saw one sold for around 35€ but some others for around 15€.
If you need help to write your auction,
PM me

I could write it for you. I think Nicolas (aka Le_Rahib) could help you too
Géraud.