How to know the amounts of any coin I have to send before buying?
The value needs to equal the amount required for a Platinum ($5000, 5000 VIP) or Silver ($1500, 1500 VIP) Membership.
However there is no minimum purchase requirement you can buy less or more.
The exchange rate is set at 1 ETH = 12 VIP or 1 VIP = $1 USD.
You can use The Legends Room website which uses ShapeShift for any other available coin but ETH, you will be able to send ETH directly to the given address.
Or use the Bittrex sale page which accepts ETH only.
https://legendsroomlv.com/mto/https://www.bittrex.com/crowdfund/vip