If you're looking to buy old Gmail accounts, it's important to note that purchasing Gmail accounts from third-party sellers can violate Google's terms of service, leading to potential account suspension or security risks. Google generally does not allow the buying or selling of accounts, and engaging in such transactions can be risky for both parties.

However, if you're looking for aged Gmail accounts for legitimate purposes like marketing or business, I would advise considering other safer alternatives:

1. **Create your own Gmail accounts** and maintain them for a long time.
2. **Use services that offer aged email accounts** in a compliant manner with proper legal protections.
3. **Invest in email marketing services** that provide features like email list building and outreach while complying with all terms of service.

If you're aiming to get access to accounts that seem "aged," it might be worth focusing on growing and managing your own accounts responsibly.