It always amazes me to see people who are supposedly running a business who don't get that it takes investment to make money. Sure, you can do things on the cheap, but in the majority of cases, you get what you pay for.
Of course, there are some really great bargains for online marketers. One of them, which I highly recommend, is Jimmy D. Brown's List and Traffic site. It's $10/month and you get a lot of great information on how to get traffic to your site and build a huge list.
As you've probably noticed, some people don't think a thing about spending $1000 (or more) on something for their businesses. Why not? Here's another product under $10, which may help to explain it...
Think and Grow Rich by Napoleon Hill
This is actually an audio download via iTunes. I've seen the same thing selling at Amazon and at other vendors for as much as $90, so this is a huge bargain. Almost every successful businessperson has read this book, so that should tell you something about how important it is.