Man I'm going thru this now and just got the first bill.  Good grief!
You see, since I was a UPS employee/Teamster, I had coverage until July 1.  My surgery is all approved for payment via them...but the Dr's Dad died and all got re-arranged for next month.  
Well there's no real gurantee going back to my full-time employer's policy will cover this procedure in time.  So, I've opted to stick to the known good...but ouch!  $822 for 3 months of coverage...or $402 per month!  
The bigger gamble is go to the other plan, pay my $100 a month and hope they cover all....and if not, well, then pay a few grand for operating room expenses, etc.  By those numbers, $822 is cheap!
Anyone else been thru this Cobra fun?  eh gad!
And that's just for *me*, I have no idea the insurance costs for a family, etc