I bet he has a stash of 060s laying around, if people are willing to pay 350e for 030 (with used CPU) imagine the price of a 060 card.... Current customers will "need" an upgrade in a few years.
He better hurry up tho or he might get bitten by a vampire

That's true for today...
When he purchased the Apollo schematics ? About ten years ago ?
Ten years ago, 060 are not so rare than today...
And when we discovered the rev 6 since about 6 years (2009), they were very cheap (about 25-35 euros with FPU & MMU and reach 105 Mhz on my Apollo 1260) and NOT rare...