It's pretty common for adults to go off feed after there has been a change in their environments. Try to find out from the breeder exactly what temps he kept them at and what size caging. I wouldn't worry. They will eat when they are ready. I bet when breeding season gets close they will start eating really well for you.
Last year I drove a het lavender female to a friend up in NY. It was eating great for me, but the drive from FL to NY along with the new enclosure knocked her off feed for over 6 months.