If it helps, I've termed my obsessive buying as "collecting" hehe.
But in actuality, I now have a pretty rigid set of criteria a tie must fall into before I buy it (at least for my own collection)
*Made in USA, England or Italy (Or France...etc)
*No flaws that can't be fixed easily at home
*Natural Fibers only (with rare exceptions for certain club/heraldic ties of proper pedigree)
*Trad patterns only (with some exceptions when applicable)
*Strong emphasis given to recognized makers of acceptable quality.
*Only buy duplicates if it's cost-effective to do so.
I'm sure there are more "rules" I go through in my head but these are a start...