I only had two runs so far, the first time I was still fiddling with the contrast and getting used to the control... the second time was maybe around 2.9 mil, nothing super yet.
I'm going to order a front lit SwanCrystal from mash-mods (playing on a standard WSC at the moment) and I'm going to try sticking one of my spare PSP D-pad covers on it, so hopefully I'll be able to see AND control it

But SWEET game so far these 7 minutes! This will definitely be my #1 choice of pick-up-and-play.
edit: Woohoo! I made it to the bottom of the score table!
Normal mode:
iatneH - 7,502,110 - Area 20
iatneH - 7,830,290 - Area 18 - found out that using shield boosts the multiplier... but now I lose more lives from aggressive play
And here's a question for Ghegs... I read that the Wondercoin shipped with Guilty Gear Petit? Do you know if it was separately packaged or contained inside the GGP package?