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$2.95 for 0.01% ratio accuracy, and $2.43 for 0.02% ratio accuracy.
Some hardware I've worked on lately autocals itself and measures the bias current of OPA227's. I can get a few select values of 0.1% resistors for about $0.10 each.
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You've been spoiled by all your fancy equipment and big budget. Here's how the cheapo hobbiest gets precisely matched resistors:
Dump a hundred or so (1%, 805 is my usual) into a telfon fry pan (don't let the wife/girlfriend see this). With the probes of a 5 digit or better meter, herd them around into groups of .1%. Keep the biggest group, put the others away. Set the pan on a hot-plate, turn the heat to the lowest setting. Sort again, to your desired tolerance. Let resistors cool, then check again.
If you can't find a set of resistors you like, try one of the other .1% groups, or start with a higher initial number. If you're really anal, cycle hot and cold a couple times and see if your set stays matched.
No, I don't need to get a life.
