There is another thread on the subject here. Basically, I believe that treated lumber is toxic, but it just is a matter of degree and exposure.
However, that said, I have a playscape made of treated lumber in our backyard. We just got it, stained it and now are in the process of sealing it.
Cedarworks makes those glamourous, gorgeous, stunning playscapes that cost many thousands of dollars. You can see their stuff at http://www.cedarworks.com
There are inexpensive nontoxic playscapes manufactured by Cedarworks called Playarounds that are sold by Sam's Club for prices ranging from one thousand dollars to two thousand dollars. http://www.samsclub.com/shopping/nav...803&pCatg=5192
They have three models.
How old are your children? There is one very interesting thread on slickdeals that is discussing wooden swingsets. I learned a lot from it because a dealer and an installer are discussing many swingsets. I was surprised by some of their advice. To find that thread, you would have to search for playnation.
In general, the childrens' ages are a big consideration. The Sunray sold at Costco (for 1399 in the store, which is much cheaper than buying it online) is highly recommended and is manufactured by Rainbow. We bought a Sunray and had it in boxes in our garage when we saw a great deal on a Playnation on Craigslist and bought that instead. Sunrays will work great for kids and ours looked great. But our kids are tall for their ages and we wanted something bigger.
Do check Craigslist. Often, obesessively, and for cities within a certain radius. You might luck out the way we did.
I looked at the Playstar website http://www.playstarinc.com/ps/contender-gfv.asp
and the playsets do look fun. But I personally think you might be able to get a better playscape for your money by going with a Sunray or by finding a set on Craigslist. Remember, you can try to wheel and deal with playscape dealers.
BTW, another great thing about Craigslist is that it can give you an idea of how well playscapes hold up over time, just by looking at the pix.
You and your kids are going to have so much fun with this!http://www.mothering.com/discussions...light=swingset
-- another thread with some of the same topics that came up recently.