I think cloth pads can be a little bit of an investment. I definitely understand not wanting to spend extra on them. If you like sewing, you can always make your own for a lot cheaper! :)
It might be cheaper to buy them from places like Etsy, where they are handmade. However, the different absorbency make a difference in price. Like, cloth pantyliners you can get like, a pack of 6 for anywhere between $8-$12. But because they're cloth they have a little bit of a higher absorbency than a regular disposable pantyliner.
The moderate-heavy pads are usually the most expensive because they use an expensive cloth called "zorb", so one heavy cloth pad can run you like, $7-$8 each.
It's not easy being green, but in the long run, you won't have to spend money every month (once you build up a stash of cloth pads, of course), and if you're like me, you won't have to spend like $20 every month because you have a heavy flow that goes through at least two packs of pads each period. Haha.
They're really cute styles though, let me pull up some images of cloth pads: