According to that site, crossfires like fighting. https://mnpctech.com/gpu-support-bracket/duel-crossfire-sli-gpu-support-brackets-pair-silver-non-reference.html 

LMAO

I'm guessing your referring to how a lot of mobo PCI slots wouldn't allow those to work?

I haven't worked it out....

There is also the more dodgy route of using some fishing line and attach it to the top of the chassis. 

I was able to use a roll of masking tape in one situation as I was forced to use a low PCIe slot due to sag killing a higher slot.

Hmm yeah , I'd prefer something that doesn't look dodgy especially when your aiming premium looks... but from a budget point of view I could see how that could work. 

By the time you currency convert and pay shipping in US I'm not sure the mnpctech one would be worth the cost. There are some alternatives on Amazon but don't review very well. The mnpctech is designed to work with certain cards.

What's the sigh for in regards to the crossfire brace's?

Something like this might be of use.  https://www.aliexpress.com/item/Computer-Graphics-card-CPU-water-cooling-heatsink-mount-Fixed-Pneumatic-jack-spreader-fitted-Support-arm-rod/32669550531.html?spm=2114.search0305.4.3.tyJpre

My sigh was in reference to your spelling/grammatical error (your vs you're) exasperating your post not getting the spelling error in the url/product description (dual vs duel).

Ah the grammar police are out in force, probably not a bad thing.  MSI do something very similar, look on Amazon...

I'm guilty of tying cards to higher points, does the trick I guess. Rather that than a banana shaped card.

I have however thought about hitting up my friend with his 3D printer to see what could be fabricated.

Just Googled this and yes there are some DIY designs out there... Do you know someone who can help you out maybe.

No idea how much it would cost to print