Yes, that's a good example. I'd also add binary notes (made of two digits, e.g. 1010010) for sure. You might also want to look for serial numbers that make up your birthday, or someone's birthday that you know.
If I understand your last question correctly, fancy serial numbers on good condition notes would have extra value no matter the denomination. The difference in price comes with the face value on the banknote. The profit margins would be higher on lower denomination notes since most collectors would rather pay solely for the serial number, and saving money by not wanting to spend the extra to get a higher denomination. So I would be a little selective in the higher denominations when it comes to condition and/or rarity.
with wildflowerAB: make sure your employer is on board with this or you may get in trouble. Over time you will get quicker in identifying whether a serial number is special or not. Good luck and happy hunting! Sounds like fun going through large amounts! 
If I understand your last question correctly, fancy serial numbers on good condition notes would have extra value no matter the denomination. The difference in price comes with the face value on the banknote. The profit margins would be higher on lower denomination notes since most collectors would rather pay solely for the serial number, and saving money by not wanting to spend the extra to get a higher denomination. So I would be a little selective in the higher denominations when it comes to condition and/or rarity.


















