For this demo, you really don't need it. Believe me, I checked. You can buy expensive items, if you hit '0' and still have items to buy, the money will go into negative figures.
Either way those of us who like to cheat will cheat, so for those who want ridiculous money figures on their huds or have the most abusive ammount of stats here are the commands you should remember:
2nd Edit: Some people pointed out that I'm missing charisma on this, first of all, been ages since i last played this, second the time when I released this , it was only a demo with zero content, until now I have yet to play the game with the current content, but I don't plan to do it anytime soon, but for the sake of those who want it here too, I have updated it with now having also the charisma stat.
player.a_char = Charisma
player.a_int = Intelligence
player.a_coord = Coordination
player.a_agil = Agility
player.a_curage = Courage
player.a_atl = Athletics
player.a_luck = Luck
player.gal = Gold
Edit: I actually messed around to find other stats too, and the commands below are not so important now, but you want to mess around to make your cheatings more easy in the future versions
player.b_looks = Beauty
player.b_arouse = Arousal
player.b_control = Restraint
Know Spell List:
player.s_charms = Charms
player.s_dada = DADA (I'm not a hp hardcore fan so can someone point me out what is the use for this one exactly?)
player.s_fly = Broom 101?
player.s_comm = Sociability
player.s_potions = Alcoholics Beware
player.s_trans = Transfiguration
player.s_spot = Quick Eye (probably for those who want to do flying sports)
player.s_sexp = Sexperience (Your FAP ability has finally been quantified)
player.s_hide = Stealth
Points relevant only for the hat (kind useless now since there is only harry's team or draco's team in the game but nevertheless its here for those raven or huffpuff fanatics)
gscore = gryffindor
sscore = Slytherin
rscore = Ravenclaw
hscore = hufflepuff