Good deal or Bad deal???

[70' GMC]

It is a dark blue and white GMC, its the model that had the black markings on the grill, it is a 2500 model. The trucks hood is lipped up on the drivers side, where the cowl is. The person wants 900 but I cant see 900 dollars for it. I talked to the mans sister at walmart and she said are you still interested in the truck, I told her a little, but I can't see 900 but 500 to 575 dollars. I will try and get pictures ASAP! I hope you guys can tell me something so I wont wast 500 to 600 dollars on something worser than mine. Im not going to be selling NOTHING ON THIS BOARD WHAT SO EVER.