The suggested retail price of $229(USD) for this laptop replacement battery and included AC adapter is very reasonable. It's a laptop accessory that mobile workers should definitely consider. The compact design makes it a breeze for packing and you needn't worry about increasing the overall weight of your laptop carrying case, as it weighs just 19.6 oz.
Universal laptop batteries are quite often overlooked by mobile workers and this particular battery shouldn't be. It uses Lithium Polymer technology which is superior to Li-Ion technology and it's lightweight design is resistant to overcharge and leakage.
If you aren't sure if your laptop model will fit, you can check the listing provided and it also advises which tip to use based on your model.