I understand your dilemma! VoxHog has the right idea; set a certain figure in your mind of how much money to keep in knives, then sell the rest. Upgrade when another one comes along that you just must have, and sell one.
Junk Yard Dog #1 Moderator/Leader of the Pack Good night Mrs. B, wherever you are! Long Live the Brotherhood of the Yard!
VoxHog has the right idea; set a certain figure in your mind of how much money to keep in knives, then sell the rest. Upgrade when another one comes along that you just must have, and sell one. 
