I had eggs shipped in late May and early June last year and had excellent results with ducks and geese. This year I've had very mixed results with hatch rates less than 50%. I'm sure it's a shipping issue; the post office has made some changes since last year. Eggs I picked up from a breeder last month had a 100% hatch rate. I think you're still fine, but you'll need to look at the eggs as if they're twice as expensive as the are since half of them aren't likely to hatch. When you do that, even with the lower shipping costs, you might want to see if you can still just order chicks. Or at least find someone selling eggs close enough that you can make a weekend road trip.