I'll weigh in too, 30 was good.
These usually go for more than the unis, because the wings can break off. The paint & symbol on yours looks good too. They can get paint rubs just like FSF can.
Congrats if you're getting into these!
But it's difficult because they weren't as popular as FSF and sellers often don't know what they are. So they're harder to come across, especially at ebay. And, like mentioned, the prices can be wildly varying which is annoying.
I do collect these, but, because of how infrequently they are for sale ever...I'm still not complete.
Mini fillies - these came in 2 packs
Lighting up w/flowers
Princess fillies - growing hair
Unicorns - there are short horn & long horn versions of the same characters to look for, but not all had 2 versions
Carriage filly - a unicorn with a carriage (carriage unattractive)
So there's lots of fun you can have here with this collection...if only they're find-able.