Not sure where you are located, but around me there are stores like Goodwill and similar.
I have amassed quite a collection of very expensive knives by digging through their buckets of utensils every now and then.
The best finds have been at a place where everything in the bucket is $1. Some places get up to $5....... but I have found a few knives that retail for over $100. Worth a dig or two. :) Picked up a nice steel for $1 also.
I also made a knife block by making a 12" tall box out off wood, about 6" X 6" square, and filling it tight with standing uncooked spaghetti. The knives slide in and out with ease.
You are correct in finding some treasures in these type stores. Unfortunately, I personally know many people who for some ignorant reason will not shop GW, Salvation Army or any thrift store. Beneath their dignity, as if they possessed any.
Good idea on the knife block!