If you are willing to wait for it decent .22 ammo is available at a reasonable price. If you are qualified you can order it from the Civilian Marksmanship Program.
The CMP sells Aguila standard velocity at $260.00 plus $24.95 shipping per case of 5,000 rounds which is 5.7 cents per round delivered to your door (Alaska and Hawaii slightly higher).
They sell Aguila .22 Target for $385.00 plus $24.95 shipping per case of 5,000 rounds which is 8.2 cents per round delivered to your door (Alaska and Hawaii slightly higher).
The last case I got I ordered in February and I received it in August, I wasn't expecting it until October. They don't charge your credit card until they are ready to ship.
You will need to go through the CMP qualification process and file some paperwork but then you can order various types of ammunition, not just .22, targets, accessories, and even rifles at less than the market price. It is well worth the effort and the profits go to support the CMP programs including the National Matches in Camp Perry.
Here is the link to the CMP Sales Page (many additional items are listed on their E-Store page):
http://www.odcmp.com/sales.htm
The link to the Eligibility Page:
http://www.odcmp.com/Sales/eligibility.htm