Request DNA Sexing Tests for 100 .  Prepay and save! If you know that you will need to test at least 100 chicks, you should use this option to save (comes out to $8/test). You have one year from order to use all tests. 
Sale is final & non-refundable. 
*If test returns as inconclusive, you have the option of submitting another blood sample one time to be re-tested at no charge. 
 
You may add on the test kits at $1/each. However, especially for bulk orders, I recommend you purchase the supplies to make your own collection kit which would be much more cost effective for you. You should be able to find all supplies on Amazon and some at your nearest wholesale store or pet store (suggested links below, but you may use your discretion at where to buy - just make sure it matches the description): 
0.2 ml  PCR micro centrifuge tubes with caps
Alcohol pads (cleaner to use individually wrapped pads to avoid cross contamination)
Styptic powder (you may also use corn starch)
small sealed baggie