I asked:
I see i can buy maximum 4 additional IPv4, i want to ask if this is an subnet with gateway IP as i think i need subnet.

They answered:
"This datacenter do not offer dedicated VLAN for IP blocks so IPs comes without dedicated subnet"


So does it mean that IP subnet is in another words "dedicated VLAN"?

By subnet im meaning set of IP addresses which i can assign to an virtual private servers within my physical server. Then these virtual servers IPs will be accessible from internet.