Is it safe to order desert roses on line?

Welcome! Yes, if you're careful where you buy. We have our Green Pages with recommendations of good growers. You can see it here:
https://garden.org/greenpages/

Ebay has some good sellers. Be sure to check their feedback ratings and buyer comments.

Etsy has some good sellers of Adeniums. Check their ratings before buying.

Many buy from Facebook sellers on the various plant groups.

I have no local places selling them, so I have bought mine online, and have gotten some in trades. Do you have others or will this be your first?

I got my first Adenium from our local WM.
But I did get some seedlings before from someone at Ebay and it shipped fine.

You will also find some Adenium growers/sellers here in NGA too. Go to the chat thread in the Adenium forum and ask if someone is selling any.

One that does sell them is Esperanza. I don't know what she has available right now, but you could treemail her to ask.
https://garden.org/users/profi...