What do you save by going to Walmart? $5 a box? Maybe more, but assume that is what you save. I go to the range at least once a month, I shoot 200-300 handgun rounds. That's at least 4 boxes. So in a year, I shoot 50 boxes of ammo (Sometimes that number doubles). So I might save $250 by using Walmart. But I bought a Hornady LNL instead. It cost me $380 with shipping. Once you figure powder, primers and bullets (brass was free from my own shooting and pickups), consider that you are up to $600. Your costs could be higher but this should get you about the same number of rounds per year. Assuming that it cost you $750 for a year of Walmart ammo (@ $15 a box), you've saved yourself $150 and never had to buy anyone's stupid ammo! And next year you don't have to spend $400 for a press so you only pay $200 for what used to cost $750 at Walmart. Do you like saving $550 a year?
Some people say that reloading does not save any money, it just allows you to shoot more. This is true to a point. If I did not have the press, I would only shoot 100 rounds per trip and at Walmart, that would only cost me about $400. So yes, I save less money by shooting more but I'm still saving huge amounts of money, even over the course of 2 years. And in 20 minutes, I can pop out 50 rounds. 1 hour and 20 minutes gets me 200 rounds.
Everyone's numbers are going to be different but I shoot lead bullets and Berry's plated bullets. They are cheap and effective. You bump up to XTP's and your costs for bullets will easily double or triple for no real improvement at the range.