What happens next?

How to buy seed
Look at when the seeds expire.
Don't be tempted to buy seed that is past the expire date because seed deteriorates after that time. If you do get seed post the expiry date, make sure it's a bargain and don't be disappointed if it refuses to germinate or produces poor.
Buy enough seed and not too much. Having too much seed and nowhere to plant it will mean that the unused seed will go to waste.