I regularly visit a Dutch trading site to see if there are nice SAK's or other knives. The last few weeks I noticed that the prices of DAKs (Dutch Army Knives), especially the alox ones that were made by Victorinox in the 80s and 90s, are rising spectacularly. About a year ago I bought a number of them, for about 10 euros on average. Now I see people willing to pay 60 euros (circa 77 USD) for them! I never thought of multitools/SAK as investment objects. 
