I tried to book a travel recently and used a price agregagator to compare values. I know often the listed prices still have extra fees on top.
I picked the best price and read the travel agency conditions and all seemed fine. They clearly state that there were no fees or taxes. The final step though revealed prohibitive costs. There was an extra charge for credit card, debit card, etc.
The commission was around €150. This made the price much higher than that of other companies in the end. The problem, besides bad publicity, is that you only get this information in the last step.
I always try to find reviews but these tend to be negatively biased and are often inaccurate and don't necessarily reflect this kind of problems.
Is there a website or resource that list travel agencies and these commissions and practices?