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.