Currently, the game offers only a 30 day VIP, or the year VIP.
Could a mid-range option, such as a 90 day VIP be added? Based on USD, the current price points are:
30 Day - 4.99 (About $59.88 for 12 months)
365 Day - 49.99 (About $4.17 a month when averaged)
For the 90 Day, I think a Price point that averages about $4.50 a month would be fair. That would calculate to $13.50 for the 90 days, or $54.00 a year - making it less expensive than the Monthly Rate, but it still would cost more than the Yearly rate. The only thing that would change would be the amount of gems, as you’d get 30 gems for 90 days (instead of 30 or 365 for the current plans). The other VIP benefits could remain the same.