Online shopping may be the 'thing' these days and there are a plenty of websites that trick you to buy 126 Keys/set Milk bubble Theme Keycap For MX Switches Mechanical Keyboard PBT 5 Sides Dye Subbed Key Cap Cherry Porfile internet, but there's none that will guide you - giving out basic principles of buying stuff online. So , assuming that you've got all facts packed about the need to is included with goods online. Mathematics is never cool, especially for me - so for those like me or maybe even otherwise I suggest you to understand the math behind the discounts while offering. Take your time - understand the price, the discount and do a lot of calculations; trust me you'll never get wrong. Stop Buying Things You Have already - The problem with many people is that they tend to buy everything that they like - even if they already have it in abundance, which is never a smart buyer's feature. So what you need to stop performing immediately is stop purchasing the things you already have - keep in mind there will be another day so you can get something new the next day.