If you have plenty of money you can buy a big apartment, or a whole hotel or something.
The problem is how to save a small amount of money for a year. For example save each month to buy next year a new fridge or a notebook.
Instead of buying things to resell, I prefer to buy in advance things I'm going to use. For example enough concentrated laundry soap for 1 year, or tuna cans for two months. They have a good volume to price ratio, and they don't spoil. [I could boy more tuna cans, but it looks too weird.]
This is useful to absorb extra payments, for example we have a bonus half salary in July and December.
Real estate prices are somewhat proportional.
It's profitable if thought in terms of Turkish Lira. But when corrected for inflation, not really.