Combo kits are a fast and easy way to get started with cordless tools. They concistently represent a good value compared to buying the tools individually.
Combo kits have consistently been a good deal for consumers. Pruchasing the tools included in a particular kit is almost always more expensive than purchasing the kit.
Kits often include only 1 or 2 batteries. If you plan on using your tools heavily, invest in a third and maybe fourth battery.