The H1N1 vaccine is free.
When I went they only had the nasal mist/spray. I know this form is used for kids, not sure if for adults too. In any case, you should not have a chronic respiratory illness like asthma, for the nasal stuff.
As an adult you can get H1N1 vaccine if you are in a high risk category only with a proof from your doctor that you have a severe chronic condition (diabetes, asthma, others -I don’t know which exactly qualify – you have to talk to your doctor). Or pregnant women – especially in the second and third trimester. Or if you are healthy but a medical worker. And they ask a few other questions – if you had a fever in the last day or so or feel sick you shouldn’t get it at that moment.
There isn’t enough vaccine as of now for all kids and medical workers. Every day they get a batch , and you have to call/ask what type it is, if it’s for adults or babies etc. The waiting can be up to 2-3 hours and they can ran out of it in the afternoon. When I went it was pretty orderly.
They also were giving the seasonal flu vaccine to anybody in good health – that was 10 bucks.
As a note, for my kid, they asked if she had received any other vaccinations in the last month or so.