I bought about 3 cups of wheatgrass berries at my local Health Food store for $1.89. Pretty inexpensive when you buy from the bulk bins. And soaked them overnight in water.
Then I made a sprouting jar by cutting out a piece of window screen and holding it in place with a jar lid. This worked perfectly but for growing wheatgrass I've determined completely unnecessary.
Then I added the berries to a seed starting tray full of "dirt".
Then you spray them with a water bottle and cover with newspaper to keep them moist and dark.
One day later it started sprouting.
Day 2
same picture with flash
Day 3
Day 5 (harvest day)
My normal juicer is a centrifugal juicer and it won't juice wheatgrass so I bought a manual one that does. It was less than $50 and worked perfectly.
Just 1/3 of my seed tray made a 4 oz shot.