Will it be possible if to develop a coin with another coin with fixed conversion with it. Let's say coinA = 10coinB and coinB is used for a gambling site with a chance to increase or decrease its value and CoinA has an option to be broken to coinB to supply the demand.
So if coinB is $0.01 you have an option to sell your coinA for $1.00 for someone who needs coinB to play on the site.
No, that's not how market economies work. Look at, for example, Venezuela, where there is an official fixed rate and a black market rate. The latter reflects the real value of the currency. Luckily, in the crypto-currency world, you won't be put in jail for participating in a marketplace.
The other option is if you have lots of cash and can prop your own currency up in the market place, e.g. how some European currencies are pegged to the Euro.