Hi,
Filtering by price can only be done using XS or X price as pointed out
by the documentation.
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Oliv
Filtering files having extended license price below 5 credits
(max_price_x = 5) does not make any sense: you won't find any images
having such low extended license pricing.
As I understand it, you want to filter based on standard license, so the
correct filter should be max_price_xs. I suggest to define it to 1 so
you have in return the cheapest available files
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Oliv
Like I said ealier, it's not possible to filter on "Standard M" license.