Mirena is $512.23, if you have to pay out of pocket. Fortunately my insurance pays 80%, but there is a catch you should be aware of. It is usually not covered under your pharmacy benefits, which is the only way that the company that makes mirena can bill your insurance, so to get around this you have to pay for mirena, have it sent to your physicians office and personally submit a claim under your medical benefits. The alternative is if your physicians office supplies the mirena and bills your insurance under medical, which most won't do because they end up losing money. Very confusing.
If you call their 800# and give them your insurance information, they can find out if your insurance covers it. The good news is that even if you pay it out of pocket, it is less expensive than having to pay for the pill for 5 years. Oh yes, and they do have a payment plan.
I opted not to go on Mirena b/c after having my son I went on progesterone pills and had awful side effects (inflammation and pain in my joints!). So I have the copper IUD and they are not too bad. My periods are 3-5 days. I usually get 3 or so days of very heavy bleeding, but the annoyance is the few days of spotting before and after. And the cramps are quite different. Instead of cramping that lasts for a few days, I get a few extremely intense cramps that are reminiscent of early labour pains, but only last about 30-45 seconds. I may get 2 or 3 of those in a day.
I may opt for Mirena when I take this one out. Still not sure.