layout is the way in which the parts of something are arranged or laid out
NO CPU/ NO MEMORY/ EXPENSIVE/ UNNECESSARILY BIG
You can say that the item that you bought is a wise buy when it is affordable yet tasty or sturdy and was not bought just because the item is on sale.
For example in the market you are going to buy eggplant for dinner. The last time you checked eggplant is 50 pesos per kilo. When you arrived in the market it is only 35 per kilo and is in a good condition, so you bought a kilo. You can say that what you did was a wise buy because you bought what you need and the price was also affordable yet the eggplant is good condition.