Likewise, I am dubious about gait analysis and the way it is used by retailers. When I had mine, I was recommended the most expensive shoes in the shop as they were, apparently, the only ones in my size that suited my gait, shoe shape, etc and custom insoles. The next week, a friend who is completely different size and build went into the same retailer and, as if by magic, were recommended exactly the same expensive shoes! Since then, as I cannot afford to spend £100 every time I need to replace my shoes, I have just bought shoes that feel comfortable and have not had any problems.
I have been training for the London Marathon in Brooks Glycerin 9s which were recommended to me when I had my gait analysis done and they are great shoes. However, I am already on my second pair this year and, of course, they are quite an expensive shoe. Can anyone recommend a cheaper alternative as I really can't afford to buy a new pair of Glycerin's every 2 months? If I could get a second pair of shoes that are around £40, perhaps, I could alternate these with my Glycerins.