percentage

I see each hugedomains salespage, for example activepair.com ainoo.com asiahero.com aspeedtest.net is have perfect salespage, beside Buy Now button, there is also installment 12 months plan do you think about how much Hugedomains sales percentage? about 5%? 10%? 20%<? and comparing with...

I see each hugedomains salespage, for example activepair.com ainoo.com asiahero.com aspeedtest.net is have perfect salespage, beside Buy Now button, there is also installment 12 months plan do you think about how much Hugedomains sales percentage? about 5%? 10%? 20%<? and comparing with...