Those pipes are not really all that hard to break. Just depends on what its been leaned against, or fallen on while sitting in the shop.
Pictures can hide a lot of sins but judging from your picture the head looks nice and clean. You can even see the pores of the metal. If he is trying to shaft you he spent a lot of time cleaning an old head to look that good.
I think you will be ok and that tube thing is no big problem. Like some one mentioned. Pull the front half of the rock arm off and replace it. Bolt the rock arms back and if your lucky no valve adjustment needed....
