Isn't it late already to buy this token, from your explanation it has already done a 19x return so what makes you think it'll continue to rise when there's no news concerning the project that's causing the price to increase in such amount of gains in a very short time.
Gambling tokens are altcoins and all altcoins behave alike, they get pumped and dumped later. I see this tokens dumping than continuing to increase in price unless there's some positive news that'll be coming in future to keep the price increasing higher.
What are the benefits of holding RLB, when you can use other coins like Bitcoin to gamble on the site. If Rollbit wants to add value to their coins, they should add some advantages to using RLB tokens to gamble so more investors will buy the token and gamblers too.