I think you're right. When we discussed this last season I said that we could make it free entry at Fir Park and we still wouldn't fill the place most weeks.
Teams like ourselves need ticket money to survive (thanks to the unfair allocation of TV money). If we halved prices, there is no way we would double the crowds. However, there is probably a price point where we could encourage a few more punters in and still make a profit - especially if you factor in the extra cash they would spend in programmes, bovril, pies, pints in the Cooper etc.
It's also great PR to reduce prices in the current financial climate. Especially for kids. I'd be all in favour of letting all kids in for a fiver (or even free at some games) until people have a few more quid to spend. Every other business out there is cutting their prices, and football should be no different.