Fair to expect honesty?

With summer ever so near and the world affairs being the way they currently are, rising oil prices is a sure-fire conversational hare. Last week, at the end of an interstate flight the topic invariably came up between us and the driver of the cab we were in. Rising oil prices at the gas station is a relatively unaccustomed affair in this oil producing state. The interesting bit of the exchange was when the driver disclosed to us that he and some of his day job colleagues were in the process of putting together a car-pool-to-work scheme. Also, that this was not exactly exclusive because everyone around seemed to be crafting similar gas saving strategies. Coming from residents of a historically oil producing and gas guzzling state this was a pleasant surprise. Of course it just reinforces the conventional economic law that demand can be fundametally influenced by changes in prices.
Oil prices do not generally reflect the true demand and supply in any given market. There is the subsidy buffer in almost every instance. In India for example the ongoing -and for some time- debate about cutting petrol subsidy so as to reflect a price nearer to the actual cost of acquiring the resource inevitably highlights the fact that a skewed price in turn skews demand. A cut in the subsidy [lets not even begin to entertain the thought of removing it!] will alter the price but more importantly will alter the demand for the commodity too. For example, by eliminating wastes or generally nudging the population to treat the resource as the dear commodity that it is.  
In this country the oil prices are on the up again and as with the 2008 episode, it has all to do with global imbalances in supply and nothing to do with correcting the price in the domestic market. The 2008 spike in oil prices had appeared to just begin to alter the demand behaviour in the domestic market with increasing sales in hybrid vehicles and a corresponding drop in SUV sales for example. Currently even if the prices at the gas stations have been creeping upwards rather than galloping, the familiarity of the situation has got the population already preparing for cutting costs.

So, the knowledge of the truer price will bring about a more sincere behaviour then?

Now, along the same lines and from a parent prespective [everything these days has a parent prespective to it] I begin to wonder at the implications of this maxim to child rearing. Will the knowledge of the actual price to pay or revelation thereof elicit a non-skewed behaviour? A more honest behaviour, an action or reaction that is free of wrong incentives?  A more of "for the right reasons" kind of conduct?
Further, talking as we are of children and given that they are not exactly in the best position to judge or fully understand the consequences or price at all times, is it then the responsibility of the parent to show the repurcussions as best as he/she can? That then begs the question of ability on the part of the parent with regards to how much they may, can and more importantly are willing to unveil!

If the question is about non-skewed beahaviour on the part of the child how much of a non-skewed bahaviour ought to be expected from the parents to beging with??