Since you said in that 9" to 11" blade length and I have been in a big blade making mood for the last month or so, Maybe something like this.
It has a 3/16" thick blade and is 10" long blade.
Or this. It might be a little extreme lol. This one has 12" blade and is 2.5" wide and was made out of a 1/4" thick piece of 0-1 steel. That one will cost more than your $100 like you wanted but I would need to use more grinding belts and the steel will be just a tad more also. most likly about $15 more, anyways.
This is what it would look like as a neck knife lol.
Here is another pic with the 12" one and then another knife I made up also. It has a 10" blade.
These are hand made knives that I made using 0-1 tool steel.
I would make you one,
Just Pay for the Materials.
Cost would be around $100. With most Micarta, or G-10 handles and some great wooden handles also like cocobolo, osage, and bocote. I make knives for fun not to pay my bills.
Here is the deal Shipping to you as long as you live in the USA will run you about $13 ( I know this because I sent out a knife like this a week back) so you are over you limit some, but you get a custom hand made knife and a handle that I will try shape to your hands.
Just let me know if you are interested or not. If you have your own thoughts as to what blade and handle shape you want I can sure try to do that for ya.
Bryan