I got my three girls from The Urban Gecko about 5 years ago.
http://www.theurbangecko.com/
They were a little pricey, but the gekcos were about 25G when I got them. So they were established and doing well.
Still have them today and all are happy and healthy. The Urban Gecko was also very careful not to ship when expected, due to weather. I was happy to wait.
All are beautiful and were as advertised.
Have never gotten any geckos from anyone else, so I can't comment on anyone except The Urban Gecko.