Yes u can, it costs 25 k for lvl 1 guild, 2.5 mil for lvl 2 guild, 75 mil for lvl 3 guild, and 900 mil for lvl 4 guild
T1 guild = levels 1(25k) level2(2.5mil) level3(75mil) and level 4(900mil) T2 guilds are only to level 3.