Lorien, you are a collector. Once you buy that first knife that you don't really need, you begin to collect. You are even an advanced collector, you got there buying the "imp" Tai Goo's blade.

Don't let the high priced people on this subforum let you think you're not collecting just because you spend less than 1K. Hell on the slipjoint forum, those collectors sometimes only spend a few bucks at the flea market for their treasures.
We all have to balance our addiction to knives with our financial situation. I too save my "pennies" for knives. I am currently saving for something around $500, which I have on order and is my "current dream." I also am a use and abuse collector, no safe queens for me too. For me, 20% of this is $100 which is about one fancy dinner for two, usually for something special, like the holidays. That's why I empathize, I am in the same boat as you, but a 20% increase would not force me to flush the order, it would just mean that I'd probably pay by credit card instead of cash, so I could float the extra a month or two.
However, the knife I really want is about 2K, and I could save this, but it really should go for gutters, new back wall, new storm doors, etc. For that knife, 20% is 400, and that would take me even longer to save and that kind of increase would be a deal buster. I can't float that on the credit card and be true to my financial goals. Basically, I feel your pain since I'm in the same situation. My advice was meant to be friendly since I have a similar problem.