cheaper than Ethical Nutrients Inner Health Plus per bug/capsule :)
note: the effectiveness of probiotics depends upon both the type of strains used (not just genus or species) and their strength/concentration
http://www.choice.com.au/probiotics:
The type of health benefit and amount of probiotics needed to achieve this benefit is strain specific. According to the International Scientific Association for Probiotics and Prebiotics, a probiotic must be defined at strain level, yet in clinical studies, regulatory records and product advertising, this is often not the case. When we hit stores for a product spot check, we found many are marketed and sold at a genus (eg lactobacillus) or species level (lactobacillus casei).
Probiotics - AIS Fact Sheet
Probiotics' Benefits May Be More Than a Gut Feeling