I have been using a lee loader for the last year now, and have made very accurate hunting ammo with it, but I did add to the set up. I purchased a scale for a great price off the EE, and I also picked up a Lee Auto prime, which is inexpensive and a great way to prime your brass instead of wacking them in with a hammer.
So, if your not looking to make tons of ammo, and money is a concern, then Yes, you can make great ammo with the Lee loader. I bought mine in the US for $16each, here in Canada I think they go for around $30, even then, its a small investment.
I got a press for Christmas, but will still use my lee loaders for depriming while watching TV, and I will still use the Auto prime, so there really is no money lost if you decide to buy a press later on.