Adding to what Melissa said i have ordered from siam adeniums and there hook is they can show you fantastic breeds but most of those are not for sale for 1-3 years until they get bigger mother plants to take cuttings off of to graft and then they run like 50-60 per plant plus shipping. so many show pics of real flowers that do exists but not for sale and they sell you small tiny plants that will take 2-4 years to bloom and you got nothing to fall back on.
best of luck with yours with seedlings there is NO WAY of telling what your going to get...Yes I said NO WAY of telling your final plant..
mike