Hi zxas....
Welcome to the forums first off....
First we have to know what your definition of affordable is....It means different things to different people..
Secondly,, You'll find that most factory knives aren't really set up for IWB carry...
If they do have it,,it is usually a poorly designed sheath with large bulky adaptations that will do a variety of carry modes....
There are the exceptions though..
You basically in this case have 3 choices..
1- Buy a custom knife with a decent carry rig
2- Buy a custom knife and have a custom carry rig made for it.
3- Buy a factory knife and have a custom carry rig made for it.
If you truely need/want to carry IWB a Custom rig is the only way to go.
If you have any specific questions,, please feel free to drop me a note...
ttyle
Eric...
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On/Scene Tactical
Leading The Way In Quality Synthetic Sheathing