I need to purchase the above mentioned software. MS store and Newegg only sell the 32 bit edition. Can anyone recommend a reseller that won't take ages to establish a line of credit with?

I'm currently downloading the trial edition, as it actually is 64-bit, and hoping that it allows me convert to the paid edition easily. I'm not really holding out much hope on that, however. There is 0 information on the trial website about purchase paths from the trial. I'm literally spending hours trying to figure out how to give Microsoft my money...

Thanks in advance for any advice.