THESE PEOPLE ARE SCAM.
I bought 20,000 credits from them just to see if they worked and after about an hour the credits came through to my account. I then bought 20,000 more credits for my brother's account and it came also. Then the next day, the credits from my first account disappeared and I messaged IMVU about it and they said that the person who gave me the credits in the first place is the same person who asked for the credits back (as it was a transfer) so then I messaged them constantly until they sent me my 20,000 credits (which they only did because I accused them of being scammers) then the day after that IMVU deleted my brother's account and they said it was because someone had reported his account as fraud.
Do not buy from these people, you will regret it