Nope. My membership expired in 2019. So I felt safe using the email I usually use for online accounts. That was a mistake. The system instantly recognized me and shifted into "Renewal" mode for a minimum price of $50.00.
No apparent way to get back to the new member offer and try a different address. Even after clearing that tab, any attempt to use the posted link now takes me to the renewal page.
Make sure you are logged out from Sam's, clear cache & cookies, try again.
Offer expires Jul 7.