if anyone in interested in a more detailed example of my quest stats
I usually do groups of 25,50 or 100
I do one quest after the other buying items from users shops and regular shops relatively evenly depending on quest with a bit of my attic thrown in

for example here I would
Yellow Kaala Balloon
Check Price -buy from shop

Blue Kujo Plushie
Check Price - buy from shop search

Light Shower Songs
Check Price -take out of my attic

quests usually don't ask for anything over 12-15k so the max per quest would be 30-36k maybe 40k but that is rare however if I am doing a quest run rush as I call it I will buy

for the mp
I start with 1mil mp and then do however many quests and subtract to find my profit or losses usually and then count up any items or stats said quest may give

hope this sheds a little light if anyone is interested in my findings