Everyone would like cheap flying. The reality is that in the UK the on-costs and overheads of providing the average 'spamcan' type aircraft for hire and/or training have escalated out of all proportion over the last three years. If you take the unit cost of fuel/oil/maintenance/insurance/engine rundown/hangarage/parking etc etc, you will see that perhaps £145 is not such a rip-off. Try buying a C152 and renting it out for less than £100 p/h. I would be keen to see your profits.