If 238 was the real number, it would mean that 98% of PPC cards disappeared or died since 1998.
10.000 cards was the total of all powerup cards (bppc, csppc, bvision and cvision). So let us count 3.000 for each bppc and csppc, 2.000 for each bvision and cvision.
I don't know the real amount but that is what I guess. I doubt there were ever 10.000 powerup cards (bppc and csppc) made. This would be a way too much for the small market in 1997/98.