No, These balls are not on the USGA conforming list of golf balls.
There are hundreds and hundreds of types of golf balls. There are many manufacturers each with numerous types for various skill levels and price ranges. There are distance balls, spin balls and ladies balls etc.
Don't know what your source is for that but it is incorrect. Mens and womens golf balls are the same size. The maximum diameter of a golf ball is 1.68 inches, most manufacturers make them to that size.
Deals on corporate golf balls can be found on a variety of websites as well as in stores. Manufacturers of golf balls may sometimes offer deals as well as some sporting good stores such as Sports Authority.
Golf balls such as Titleist Nike and Callaway have 12 in a standard pack, each pack being made of 4 sleeves of 3 balls. Some other manufacturers make packs of 15 and 18.
INTECH was created in 2002.
The laddie is not gender specific. Ladies golf balls are usually labelled as ladies golf balls, where as you would never see golf balls labelled mens' golf balls.
You can get personalized golf balls at the following sites I am including promotionalproducts.accoladepg.com/ , and www.golfballs.com/ , and www.rushimprint.ca/golf-balls
It is highly unlikely that you would be able to get golf balls for free. The only way you could do so is a promotion with a golf magazine or something. If you go play golf and find some golf balls you can keep them, however, you can't just go to a golf course and look for golf balls, this is illegal. The issue seems to be perhaps you think golf balls are too expensive, there are a couple of options you could buy budget golf balls or buy lake balls, these are used golf balls which are a lot cheaper.