If you read modern hobby guides about the 1976 Laughlin Diamond Jubilee set, most will say that the cards were available from the artist for $3.50. Well, here’s an ad from the March 1977 issue of The Trader Speaks proving it!
Note that not only were sets advertised for $3.50, but you could get “2 sets for $6.”
Laughlin described the set as 32 cards based on baseball’s most memorable moments, like Hank Aaron’s 715th home run.