What I want actually is to determine decent values for the products I'm going to sell.

Here's what I have so far:

Soul Staff - 25,000
Heart Bracers - 10,000
Magic Gloves - 10,000
Alchemy Book 2 - 75,000

These are decent items I currently have in stock. I hope to expand my selection but I need some accurate prices and a knowledge of what items people are actually looking for. Any help with this information is appreciated :)