Depending on what you mean by 'gold eagle ...'
If you are referring to US Mint bullion coins, the best place to buy then in bulk is generally Link hidden: Login to view
Check their prices against Link hidden: Login to view
before ordering as sometimes the latter will be cheaper. Both are outstanding, reputable and reliable suppliers.
If you're looking for 'gold eagles' as in numismatic old gold coins, I might be able to help you out. PM me with what you're looking for and I'll send you a quote. I can provide BU numismatics in a variety of types in medium to large quantities very reliably.