I ordered two packs. Each was labelled as "50 sheets of 220gsm card", but was actually 39 sheets of 180gsm card.
Even having emailed a photo of the as yet unopened pack on a set of digital scales that showed it to be woefully underweight, these numpties still insisted that I post it back to them "for inspection" before they would send a replacement. For such a low value product, that's pretty poor service.
I sent both packs back, asked for my refund 10 days later, but never actually received it. Again, it's such a small amount that it's not worth my time and effort to chase it. It *is* however worth posting this here to warn off other potential victims. You have been warned!