Purchasing azureus

[sprouse]

I am considering buying 3 azureus for $75 from a lady off of craigslist. She says they are 2 years old. Also she said: "They are healthy but they are skinny... I had a had time keeping the ff available this summer so they have been eating the smaller ff. I am probably going to start feeding pinhead crickets to get them a little weight on them." I attached the only picture she has provided so far.

Is this a good purchase? This is my first time buying pdfs, what should I look for when I go to pick them up?