I voted 8:
4mm Plossl (doesn't get used)
6mm plossl (rarely gets used)
9mm plossl
10mm guiding eyepiece (often used...damn, I forgot to count this one!

)
15mm plossl
25mm plossl
32mm plossl
20mm Kellner (came with the PST)
All 1 1/4" EPs... so I guess that's "nine that is known as eight EPs"

.
I didn't count my barlows:
2x barlow
2.5x powermate
3 x barlow
nor my 0.63 focal reducer.
How embarrassment!! There are 3 type of people in this world you know... those who can count and those who can't!
Al.
PS... and my 13mm Nagler Type 6 (which I use a lot).