The original poster was talking about the LED's with the wedge base and dropping resistor already assembled (plug 'n play). They have to be ordered for the correct DC voltage you're going to use them on and here's the Happ Controls part numbers and prices:
91-0690-00 Wedge base T-3-1/4 LED, 6 volt dc, $13.25 each
91-0689-00 Wedge base T-3-1/4 LED, 12 volt dc, $13.25 each
They are still expensive.
Edit: Just checked the current price and it's gone up! The old price was $13.25 but now they've gone up to $14.85 a piece since the Happ catalog was printed.