I've gleaned, based on the main Murakami thread, that depending on which country you're in and who your CA is, some were able to pre-order prior to 1/3/25 with no required spend threshold. Some got very lucky on the pre-ordering front and either had CAs who ignored the tier guidelines, or maybe they were in a country with more relaxed rules.
However, in the U.S., it seems like the main rule, which most CAs seemed to follow, was that there would be 3 tiers for pre-ordering prior to 1/3/25: The earliest date, in December 2024, was for prestige clients ($100,000). Then $50,000 VVIC and then $25,000 VIC. On 1/3 ordering became open to everyone.