No pain no gain.

It took this mortal about 4 months of daily seat time to get somewhat comfortable on my fluid trainer. And I had been riding bikes outside for many months before that. I guess you could say there really isn't a product that you can buy that will eliminate all discomfort without any built-up endurance. You might find a saddle that helps but it's probably still going to take some time to build up the endurance/muscles. Hard work will come with a payday the only unknown is what day that is and how much labor is required.