Hm, yeah maybe I just don't know the pricing/cost of a Synology then.

In my country just the price of a 8Tb IronWolf drive costs almost 1 entire month of the minimum wage here.

The cheapest Synology NAS available here is the DS223J, and it comes with no drives included and costs 80% of two months of minimum wage.

It's way cheaper to repurpose old hardware or buy from AliExpress and make a DIY build, there is no comparison and also I have no idea of what "custom build" are you mentioning, as most NAS builds I've seen are pretty cheap as you don't need much horsepower and DDR4 memory has low prices nowadays.

Honest question... Why people with knoedge on how to do one, buy a Nas like synology? Are you not just paying double or triple for the same result you could have if making the NAS from scratch?