well its hard to say from the pics because none of them are close ups. you should be able to tell from the wear on the cam lobes how long its been run. the section of the lobe that rides on the lifter would have a wear pattern in it. not a groove or anything like that, but you would notice that the anti friction coating is wearing away. 10000 miles wouldnt have worn it away. i cant beleive you got it that cheap. i would (before installation) take it to a machine shop and have the pressure test it for cracks. i know a good used head (stock, no cams) would be like 500 bucks without a core, and skunk2 cams are like 750 for a pair. so if you throw in a port match and polish job your lookin at like 1500 bucks or so. so i dont really know what to tell you, but that deal seems too good to be true. also it didnt come with any of the lifters and related components so....yeah, i dunno. good luck