I believe there are people selling some in the for sale section of the site. Just keep them in a rubbermaid bin... don't stack the egg srates to high... be very carefull, and cup feed then you should not have to worry about any kind of infestation. Males do have wings, but can't fly... and they can't climb. I like them cause they are fairly slow and easy to handle... So if one does fall it is easy to just reach down and grab it, You don't have to worry about it jetting into a crack at warp speed. Do a google for "Breeding Dubia Roaches" and you will get some good info, It is really easy.
Note: People will say that these are tropical roaches(which they are), and that if they escape they will die quickly in our climate. Well... I can't speak for the colder regions... But I do know that every house I have ever been into has places that a dubia roach can survive. I did an experiment a couple months back in my outdoor cages here in So Cal. I had to use a thermostat to heat some of the cages because at night it was getting down to the low 60's or high 50's, with fairly low humidity, Which i wouldn't consider tropical. I was curious if what I had heard was true...So I took an adult female Dubia... and a couple nymphs and left them out in the weather in an open air container with no food or water. It went over a month and they didn't die. They seemed to go into some sort of hibernation, and remained motionless until bothered. I eventually gorged them and fed them off. That was enough to convince me not to ever let an escape go without a chase thinking it will just die.
Another Note: I have been successfully breeding them for around 3 month I believe with no escapes.
~Joe