Well not really. Just from my experience...At my Home Depot...I have shopped for these extensively...The largest self-ballasted CFL is a 42w 150w equivalent. These are in the "light bulb section".
The larger CFL's are in the "security light" section and are not self ballasted bulbs, but meant for specific fixtures that contain the ballast. These are not spiral bulbs and start @ 42w and go up to around 105w. The brand is "lights of America" The 42's are medium (regular) base (socket) and all others are mogul base (big like a HID)....these are all 6500K
As for #2: I totally get that...I was showing an example of the above mentioned CFL's in my picture and added a cord to a fixture meant for direct wire...and I was also referring to the 110v HPS security lights, though I have rarely seen them in 250w...they are often 70w and 150w, and a good option only if for some reason a person is sketched about shipping from hydroponics companies or lives where there are not several hydro shops damn near within walking distance...or is a kid, both understandable. But 2 of these will cost more than a 250 or 400 (mail-order) and leave you worried about wiring and a sh!tty reflector(s).
Now to answer your question of "what does regular cfls having electronics built in to them have to do with a friend repeatedly burning out replacement hps bulbs in an unballasted mogul socket? maybe thats why they kept burning out, they need a ballast": again we are only partly misunderstanding...The friend burned out NON BALLASTED CFL's from the "security lights" section which in the larger wattages have a mogul base. Mogul bases are available for only a couple of bucks and these lights are often recommended on these sites as well as mistaken by the DIY'er (my friend) for being able to work as long as you get the larger mogul base. They don't, they, as well as HID (HPS or MH), need a ballast...and yes this is why they burnt out...He was not burning out replacement HPS bulbs in the aforementioned mogul bases, that would be ridiculous. The larger wattage cfl's in the "security lighting" section are fairly new to the public, and only say in very small print that they must be used in a specific fixture, and one might suppose this is for the bulb manufacturers gain, and therefore assume they are like the CFL's in the news.
That being said...I just recalled, the same friend told me he found a 300w eq self ballasted in a grocery store (he lives in KC) and it has a medium base and he is currently using it (I believe) to winter some tree indoors with a high ceiling.
I believe this is a 65watter, like mine in the pics, but in the user friendly medium base and self ballast. I assume your local hardware has these? HD and Lowes in SD do not.
There are also high wattage self ballasted CFL's in mogul and medium base available on-line and at local shops, but they are over-priced.
Hope that cleared up the confusion...If you can find the >42w bulbs I would try them as long as the price is >~$15 USD. If not smaller bulbs with splitters (Y adapters, use two to make 3 sockets) are more economical.