Business implications of integrating BPay

Hi,
I am looking at integrating Bpay for AU and NZ for a etailer client of mine and working on ROI analysis.
Does any of you have any idea on what could be incremental sales/conversions I could achieve with BPay integration?
I would prefer a more etailer/ecommerce industry average stats and not necessarily industry/niche specific.
Thanks for any help.
Cheers





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