#1 - 250e ~ 400e
#2 - No less then 750e - Dont see many +5 Hammers
#3 - 200e - 300e (15% ench is an undesired mod for hammers)
#4 - 600e (Just sounds right imo :P)
Thats what I believe. Maybe a bit more for the Foehammer but its honestly not a desired skin. The Runic I could see going possibly into 1k+ but depends on interest. Daggers could be off since I dont buy/sell them at all, but 600e seems like a "fair" price for them.
Hope this helps!