Dave, unless you're looking for a minty rack-pack set of the '68 game cards, putting a set together is actually fairly fast and easy.
There are only 33 cards in the set, and they're everpresent on eBay, often in groups or partial sets of like 5, 10, 15, 20 cards.
It took us only three or four inexpensive eBay buys to put together almost two complete sets.