Other than my box breaks with Kevin from Card Papoy and Brian from HSCA, my main way to accumulate trade bait is buying lots off of eBay. Either a box breaker is getting rid of his Judgeless loot in one mega lot or the seller offers great combined shipping rates. My latest pickup was of the combined shipping nature.
If you are a frequent purchaser on eBay it may be worth your time to check the sellers other listings. Usually I see a Pirate card I like and put a bunch of low ball bids on other auctions. You may be surprised what you end up with.
Thanks for reading!