Just going to post this again so everyone knows. Yes you can register and make accounts. However you will not see prices until Mark has granted you that access manually. Its a layer of security for him as a vendor.
Hope this clears up some issues. Also for those of you who created an account 3 hours into site launch i must apologies we had issues with the email server and emails were not getting out. please email mark or email@example.com
and they will get your account fixed up.