Good question. I believe there are two possible answers for this. One, the price of advertisement solely depends on the hands of the team - if they want to gain more clients then they will lower their advertisment price or offer a sale. And if they see that the demand is greater than the supply (workforce) then I guess the price will be raised. Two, advertisement cost depends on the current value of AB-CHAIN coin. Meaning, as the coin value increases the value of the advertisement cost also increases.
The advertisement cost shouldn't increase with the rise in the price of AB, that's utterly retarded and will scare away all the potential advertisers lmao
In my opinion no token or coin can avoid volatility of cryptocurrency ( Part of its nature ), and the price should change according to its price in dollar when we talk about their token, if 1 token of AB CHAIN is worth 0.20 $ and in future become worth 2$ , you can't keep to same price you was asking to provide the service when was worth 0.20$.
the only one benefit of price raising is the investor in their token and not the customer that use the services.