Not 4060's but I scored a pair of 4061s on ebay earlier this year and they've been fine the few times I've gone
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There was an auction for an instrument mic kit which normally has just a single mic plus all the accessories (mounts, windscreens, xlr p48 adapter, etc) but this one had two mics, tho just one of everything else. Got it for just over $500. Not an awesome deal but compared to the new price I was satisfied.
So, I look now and then and there are certainly ones that seem obviously well used but it's worth watching out for a while and taking a chance based on my experience. Maybe look for signs they were used in a studio or for instruments rather than on people on stage which seems to really abuse them.