All i can say is in Feb/March four stores were still selling at RRP (or very close to it) and saying the wholesale prices were unaffected. Others were increasingly raising their prices in the same period, to the point where the aforementioned site was 15% more at the start of March and 30% more by the end of march. It was at this point those four sites started to crumble and hiked their prices by 15-20%, or more. During the intervening period stores that had sat in the middle had already hiked their prices to follow the trend. I could post charts and screenshots to demonstrate all this but it would no-doubt fall foul of the not mentioning competitors thing. I won't comment on where OCuk was in that spectrum, but the net result now is a card that rrp at £600 is now £950 pretty much wherever you go. I struggle to believe wholesale prices will have risen by 50%.
And without you having the information on those prices anything you claim is pure speculation.
Unless you know how much OC and competitors pay its just conjecture.
There are cards on the market now and they stay in stock, as more cards become available they will start reducing, thats all that matters.