consider that.
the same stands true for a very large house. if you bug a house with 10 rooms and a large plot, you can be sure to have much more maintenance costs than if you bought a small apartment with three rooms.
as a matter of fact, you should consider this for every purchase, not only when you have extra income.
using a fixed savings rate is a bad idea. it sounds like a good idea at first to save 20% of your income. or even 50% of your income. but once your income grows, you will only save a small part of the extra part. and you will spend the other 