Bro, picture is legit. Ask for a tagged picture. They're all different picture of the of DB5's......DB5's are going for a arm, bad trade on his end. probably trying to bait you so he can get free kicks.
Had a guy try something similar a few months ago. Agreed to trade my Gamma 11 and 12's for DB5's but wouldn't send tagged pics claiming that they were already boxed up and ready to ship. True sellers usually have no reason to avoid sending pictures with their name or email tagged.
This guy is definitely trying to rip you off. If he has the time to change from black laces to white, he should be able to send you tagged pictures. Also, receiving pictures with three different backgrounds is a bit suspicious.