You can write mail to VPG and ask , they do sell resistors by piece.
Cost for "usual" VHP Z202, Z203 is around 20-50$ depends on tolerance and resistance value (hermetic package) and around 7-30$ for plastic Z202's.
Get ready for long lead time tho, like 8+ weeks at least.
These are no "metrology standard" grade , just very stable usual parts.
If you want "drool-worthy", they can age and train special resistors for you, with better than datasheet stability and TC. But get ready, as price goes real high real quick.
My
1Meg one, shown here costs $244 a piece and took almost half a year to make. 190 ? + 19? pair is 283$. Still want em?
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