I just bought my goodarch when my wife relative claim is good. But I only realiaze the meaning of good is after paying as i get to know that he wearing the goodarch shoe and go for leg massage every week. So it might be the foot massage + goodarch product helping him reduce the back pain issue ( instead of goodarch product alone).

So far been wear for a week, seem like back pain problem got improvement.  But as kelvinmdk said, most of ppl  confuse of prefabricated insole and custom made insole. I 'm confuse as well, but after read through his message, I hv to said goodarch product is  NOT CUSTOMAKE!  It oni use the ink pad to get the ink print and and outline of the feet. Furthemore, when i collect the shoe, i ask the sales man what the diffrent between my mould with other ? he told  me is the same, diffrent is just the SIZE ONLY ( which mean size 5,6 7,8 9....)

Since i just bought the goodarch product not more then one week, i can't  tell your guys the produc tis good or not, but something i dislike is THEY MISSLEADING THE CUSTOMER  AND CLAIM THE PRODUCT SEND TO TAIWAN FOR CUSTOM MAKE ! IN FACT, THEY SHOULD SAID THEY ORDER THE PRODUCT FROM TAIWAN WHICH TAKE ABOUT TWO WEEK TO DELIVER!  Nothing related to customation!

Goodarch is  the most expensive compare to other product, although the product might claim to be good, but since they already cheat the  customer since the beginning of the day and the sales man is not certified/ profesional, I advise ppl who like to buy it, go seek for profesional, dianose the problem and get the custom made insole which is less expensive then goodarch . this just my 2 cents opinion.
Conclusion, goodarch product might be good, but it misleading us that it is custom made insole and is the most expensive in  the market. Better buy other product that cheaper and have the same good functionality!  In fact, when i saying this, i lost rm400 liao! as if i introduce one customer to goodarch, i hv commission of rm400.

If any previous goodarch customer / sales man want to argue and prove me that the insole is custom make, my size is 8, if your are wearing same size, PM me and let us see any different between my one and you one!