If your status is not upgraded within a year, your qualifying spending will be reset to zero and you will start over as a Bonus member.
They stopped giving out cards a long time ago, except for the VIP members who will be mailed some cards.
So they don't really sell anything, but provide a gateway for retailers owned by Sears Holdings (SHLD) and other third-party (Marketplace) sellers. for most stores owned by SHLD: Sears, Sears Grand, Sears Hometown Stores, Sears Home Appliance Showroom, Sears Hardware, Sears Outlet, Sears Auto Centers, Sears Home Services, Kmart, Lands' End, and mygofer.
Non-SHLD owned businesses also participate for earning points as Web Partners "Base Member" is when you join SYWR to earn and redeem base reward points, but refuse to let them send you emails.
SHLD has a lot of faith in the ability of people to correctly type in numbers, but I've heard too many complaints about purchases not appearing in accounts.