Personally, I don't buy at expos. A lot of times you don't know where they came from. It could have been raised in a wire cage in a shed full of poop and pee. They could have been starved until a few days before killed and that means that they are NOT good for your snake. I feed my garter Gourmet Rodent pinkies.

Under 2lbs is $4. Anything over is an extra $2 per pound. Great prices and only 6 dollar shipping at Gourmetrodent.com