r0wly86
Head Pro
Bought my first custom fit irons when I was a 16 handicap they played a very big part in getting my handicap down to 8 .
flex probably isn't something you can do by trial and error. For the simple reason that there is no standardised flex rating across manufacturers. For instance you could find that a stiff of one brand is right for you, but that is actually a regular in a different brand.
Of course you can do whatever you like, it's your money and you can do what you want. For me it's definitely worth paying slightly more once, then sticking with it for years as it is literally built for you. Rather than chopping and changing every few season trying to find something that just so happens to suite you. I've had my current irons for 16 years, I will be changing this season, but as far as value for money goes, it's hard to beat. It works out as £37.50 per year of use. If you spend £250 on a set of irons you will have to use them for 6 years to get the same value.
That is unlikely if the set doesn't work for you particular well, as you will naturally look for another set that suits you more