You may find a dive shop or shops that offer package deals, but you have to do some research and be careful. Like all businesses you have honest and dishonest proprietors. All you really have to do is check the prices on the reg and BCD...and maybe a computer to see if you are getting a good deal that will save you money. You can also find package deals online. Personally I am a supporter of my LDS but there are many who buy online. It all boils down to how you want to shop.
Most regulators today are downstream, single hosed, balanced regulators. You may not get all of the bells and whistles but a lower end reg will be just fine to start with...The same goes for a BCD. You will find that the more expensive models will have metal D-rings, as opposed to plastic, a couple more dump valves and generally better material, but with the lower end models you will still have a BCD that is all around safe. The same for computers. You don't have to get a computer with a built in compass that is air integrated, etc... I would however buy one with 2 gas capability because if you continue to dive you will probably take a Nitrox course at some point.
"Low end" dive equipment does not mean the equipment isn't safe. You are simply going with a Toyota as opposed to a BMW. If you want the BMW you will obviously pay more, but the Toyota will work just fine.