I've been dealing with Cabela's for more than 10 years and they've always been excellent. Scopes, ammo, reloading supplies, this list goes on, I even bought two Garmin GPS units from them a couple of years ago. Unfortunately the closest retail store is about 500 miles from me so I have to get everything for them online.
I've only been loading a little over three years now, but I started with, and still use an exclusive Lee Classic Turret Press Kit bought through Cabela's, most of my dies and a lot of other equipment are also from Lee. I have nearly 3000 rounds loaded with the turret press, mostly handgun but some 30-30 and 270 also. It's been a great set-up so far and I saved a little buying the kit from Cabela's. The only complaint I had was with Lee's powder scale, mine was never consistent so I bought the RCBS 5-0-5 scale. I believe my Lee was just a defect, because others have been using the Lee scale without a problem.
The presses and kits from Hornady, Dillon, RCBS, etc. are great presses, but I had a budget I was working from and was looking for a progressive or auto-index turret style press due to the volume of rounds I shoot. The Lee kit just seemed tailor made to what I was looking for.
Most of the kits include items you'll need to buy anyway, so if you can save a little on the cost there's no reason not to buy a kit. If you're looking at single stage presses it's really hard to find a bad one, Lee, Hornady, RCBS, Lyman, they all sell fine presses and looking at the kits from Cabela's and over at Dillon, I can't really see one that stands out over the rest.
The only thing some have that I don't trust are the digital scales, I've had three different digital scales and they've all been off when the loads are compared to the RCBS 5-0-5. I prefer the balance beam scales and doubt I'll ever buy another digital.
I do recommend buying Lee die sets especially if you're just starting out. Nearly all their die sets, except the RGB series, include a shell holder for that cartridge. Most kits don't include any shell holders, not really a large expense if you only load a few different rounds, but for the price of the Lee dies you get a great set of dies and the shell holder for less than just the dies from other brands. There's also load data and a Lee dipper with each set specifically for that cartridge, but I just use the Pro Auto Disk (pistol) or the Perfect Powder Measure (rifle) instead of the dippers.
If you decide to reload and choose a kit there's enough people here to help with anything you might need to complete the kit and get you started.