Newer record for the time being..International Records
Highest inventory buying value akaju TR7 $14,365,665
levis501 (Turkey) Deadwood $24.263.272
Yes, that shouldn't be included in the records cause the event bonus is on. And even if it does, here's your new record.
I know I have gone faster since but here's one from earlier in this post, like a year and a half ago. never got updated. This recent 50% speed bonus plus added levels and gear since my pic, maybe someone could top 8500% who knows