1 - Get to level 7 by killing what ever you want.
2 - Go to the adventurer in any village and get ransacking.
3 - Find the young vampires (level 10). They are just a bit west of Dark Wave Village and just east of Southern Temple.
4 - Kill them and ransack them for their Vampire's Blood.
5 - Sell the Vampire's Blood at 10 for 50k.
6 - This should take no more than 10 minutes to get 10 Vampire's Blood.
Also if you are level 14 (ish) :
You still need to do numbers 1 and 2.
3 - Find the Bronzedrans (level 13). They are north of Dark Wave Village and are near the end of Wind Valley where it exits into the Talon Yard.
4 - Kill them and ransack them for their Dragon's Scale.
5 - Sell the Dragon's Scale at 10 for about 70k.
6 - Again it shouldn't take long to get 10 Dragon's Scale.
And there you have it - how to make 50k or 70k in about 10 minutes.