Let me understand well .... do you prefer to wait for an exchange that does not reach $ 1000000 in volume as TradeOgre, almost unknown, compared to an exchange like BIBOX that is permanently among the top 10, very often in the first 5?
Bibox exchange for Grincoin, on the first day of mainnet, is the best solution we could hope for.

However still a few hours, and around 22, we will finally have the deposits open in all exchanges, after the 1440 blocks required, and there we will find out later the human folly ... we will find out at what price will be purchased the first Grin.

imho Do not hurry, wait a few weeks, better 2-3 months, until the price stabilizes and the market finds its right balance.