I'd call Drillbit or Will Tillery as a start.
The bumper you choose depends on how you plan to use the vehicle. If you don't want a winch, and don't plan to do any difficult off-pavement driving, it's probably best to just grab another factory one from one of the sources I mentioned.
If you want to install something better, you've got to decide what you want out of a bumper, and which features are most important; such as durability, approach angle, versatility, appearance, winch plate, recovery points, light mounts, and things of that nature. You've also got to decide whether you want something out of a factory or more custom. Prices are all over the place.
Right now, though, it just sounds like you want another factory bumper that's pretty.
As for comparing prices to the Suburban bumpers, it's not a fair comparison. There are a lot more used Suburban bumpers out there, so they are cheaper. Buying from one of the people here will be cheaper than Ebay, anyway.
Cheers,
Kennith