You won't get the bearings or seals alone from many manufacturers. Some people do manage to replace them as they are an available size (marked on races or seals) usually but the overwhelming majority of pros I know will just change whole rear tub and usually the basket.

If there's no warranty coverage left it's usually the end of the machine. At this point even 5 years old isn't particularly young to die.

Some rust there at the pulley isn't necessarily an issue as there is often a weep hole to allow water that gets past the seal to drip out. You're looking for significant leakage, or noise in spin if you suspect a bearing issue.

For the record the early MHWE series had horrible problems with bearing failure, I was seeing it at 2-3 months old. Whirlpool was even giving the parts away free to reduce the PR damage.