Idk what you can get with a 4 core, and 4gb ram. Idk if its enough for csgo server, but i have promo code and can get it on discount
EDIT: a VPS with 3 cores and 2gb ram, HDD 20gb, bandwidth 50gb, Ips 1 will cost 19$. With promocode it costs 12$.
I found out that a 128 tick server could use up to 1 core and 700MB of ram and 2 TB bandwidth.
I assume that with those specs:
Linux
CPU: 2 cores
RAM: 2048 MB
HDD: 20 GB
Download/Upload: 50mb/sec
Bandwidth: 3000GB
IPs: 1 (not necesary for a csgo server)
would cost 15$ without discount.
Would be cheaper i think. If interested tell me.