Online shopping may be the 'thing' these days and there are a plenty of websites that trick you to buy IBS-TH1 Standard Wireless Bluetooth Monitor Sensor Thermometer Hygrometer Temperature Humidity Data Logger for Smart Home on the web, but there's non-e that could guide you - giving out the fundamentals of buying stuff online. So , assuming that you've got all information packed about the need to components goods online. Mathematics is never cool, especially for me - so for those like me or maybe otherwise I suggest you to understand the math behind the discounts and offers. Take your time - understand the expense, the discount and do a few calculations; trust me you'll never fail. Stop Buying Things You Already Have - The problem with most of the people is that they tend to buy exactly what they like - regardless if they already have it in abundance, which can be never a smart buyer's attribute. So what you need to stop doing immediately is stop purchasing the things you already have - remember there will be another day so you can get something new the next day.