The VIP level they have set just proves neglect. If I donate $35,000 a half purple coin under my name isn't going to cut it - they better be curing cancer.
You need to realise that these prices were set back when BTC had a lot, lot less value than it does today. Now an argument could be made to change the requirements, but theymos has consistently opposed it as current VIPs and Donors feel that it isn't fair to them given that they had to contribute that amount of BTC. Hence the exorbitant price of these account ranks.
It was stated when the ranks were created that they would be pegged to BTC and not USD. There's a chance different ranks might be created eventually, but that's unlikely.