These are the starting prices? No offense, but no people somewhat educated in magical weapons in PS would buy most of these. I'm guessing that these are the starting prices because it is the NPC price, but remember that the NPC price is often higher than the consumer's valued price.
I made a similar mistake to yours a while back in an auction, and so do most merchants.
It all comes down to if you want to do this for RP, or do this to make tria. Because the two are not such companions as one might think.
If it is for RP, what I suggest you do is to find a merchant fair merchant(Like Koios etc.) and get an estimate on each item, based on the value rather than the NPC price. Once completed, cut the value in half and make that your starting price.
If it is for the tria, then sell most of them to the NPC unless you know someone who is willing to buy it for equal or more.