Load times might not effect conversion linearly. People deal with 3 second loads until one day a competitor does .3 second loads and gives a better experience, then in a matter of months you lose your customer base.
> People deal with 3 second loads until one day a competitor does .3 second loads and gives a better experience, then in a matter of months you lose your customer base.
I tend to suspect that the effect of pricing will make a difference of 2.7 seconds in load time negligible. A 3 second load just isn't a large cost, even if you run into it repeatedly.