I think these cheap season ticket prices are a false economy for smaller clubs.
Charlton Athletic have always tried to tap into their image as the 'safe, family club' for SE London and NW Kent. A place for floating football fans to take their families. However, they are always skint. They post attendance figures of circa 16,000 - but, in reality they give on average 2-3,000 tickets away, yet include them in figures, whether they come or not, and the season tickets they do sell are priced as low as £150 for adult in some areas of the ground.
Millwall on the other hand charge between £412 and £600 for adult season tickets. Very expensive. However, the club know that the same old 6,000 will renew no matter what. Since the docks closed in the early 1970s Millwall's average gates have shrunk to a hardcore of circa 8-12,000. When Millwall finished in their lowest position in the last 60 years (18th in League One in 1997/98), having been put into administration & sold off the likes of Mark Kennedy, Ben Thatcher, Alex Rae and Kasey Keller on the cheap, 7,022 still turned up on average - with Charlton, West Ham and Palace all enjoying Premier League football.
Therefore, the club figured that if the hardcore still turned up in what was the club's lowest ever ebb, then the best policy is to charge that hardcore support a decent amount to keep the club competitive. So, we have never gone in for cheap tickets. After all, even if Millwall sold season tickets for £100, there is no way middle class families unattached to a specific football club are going to choose us over the likes of Palace, Charlton or West Ham. And our floating support only comes out for success on the pitch - never cheap tickets. We did try cheap tickets for a few games, but made no difference. Yet, a promotion 6 pointer v Grimsby Town attracted 18,500 Millwall fans in League One, with thousands locked out, willing to pay £30 a ticket.
Anyway, my point is, clubs like Wigan and Bradford City actually weaken their long-term chances of success with these cheap adult deals. Millwall do target young fans - tickets for 16-24 years olds are well priced & hope to attract the kids of Lewisham, Southwark & Greenwich to our, I suppose, 'outsider' tag...rather than safe Charlton or suburban Palace. But giving up so much potential income with cheap adult tickets is not a good idea imo.
Take next season, if Millwall, Sheffield United, Bradford City, Wigan & Charlton are all in League One, the only club generating a higher match day income than Millwall will be Sheffield United. Indeed, Millwall had the 14th highest match day income in the Championship the season we were relegated. So, while Bradford City can feel smug getting 18,000 crowds to watch them play Fleetwood Town, we can actually afford to strengthen our squad to a greater extent and hopefully improve our chances of promotion. Meanwhile, if you live in Bradford or near Charlton, how attractive does a cheap season ticket seem if you are playing Fleetwood Town year after year? Eventually you get into a situation where you have to swallow selling fewer and fewer cheap tickets or risk doubling the season ticket prices to try and catch up.
Sheffield United have a big enough fanbase to charge competitive prices in order to give them the best chance of promotion. You lot trying to match the likes of Wigan & Bradford City would be silly.