There are no guarantees on what the grade would be if graded.

Shipping options explained:

USPS Ground Advantage (preferred) - Shipped in toploader, team bag, cardboard panels and bubble mailer.  Offers the best protection for your cards.

eBay Standard Envelope - Will be shipped in a penny sleeve and eBays' standard envelope.  NO top loaders as per eBays' shipping policy.  Less protection.  Susceptible to damage while in transit.