Need advice on HO vehicles!

I saw this ad on ebay, and I am interested! However would like advise from anyone on how well you think these vehicles would work out for modelrailroaders layouts. Here is link to ad;
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7606209637#description

And some pictures he sent me;

they look ligit, but you really need to know if they are true 1:87 scale for HO sized vehicles…the guy has a web address and maybe you can e-mail him and find out if they are actually 1:87 scale…most of the boxes the cars and trucks come in will tell you this information…chuck

yep i would them they look nice to me

I think you need more advice than you are going to get from this board. Basically he is selling you the business with a bunch of half started projects. I doubt that you can compete with genuine manufacturers except for custom one off odd road names on the vehicles. I definitely notice he lists HOT Wheels, very few of which are actually 1\87. The same is true for Road Champs even though they say 1\87 on the box. Check them against some Herpa and you will see it. If you need a good part time hobby and you are interested in doing this, go for it. If yui plan on having a real business, well…