What is an exact location of said factory gate? And where precisely is the best place to position myself to both get a card and simultaneously land at least two good (sucker)punches on a manufacturer and a miner?
'Factory gate' is the point of assembly. Some brands may have there own facility, however most likely it's assembled at a contractor who may assemble and pack for mutiple brands.
Once they are assembled, a truck picks them up. That truck can be managed by the assembler, manufacture, or a purchasing distributer depending on the terms of sale.
At this point the commercial buyers will pay whatever gets them a pallet of cards, because they can stilll sell it at a profit and likely all the stock comming out is pre-sold to these distributers who are ordering weeks or months out. Some buyers placed orders a long way out so may have some commited volume arriving at better prices or may just be getting original volume late.
There could even be Government pressure to supply the internal market.
Some of the reasonably priced cards that pop up on a big global market place are returns, so a decent price pops up on a tracker but it's one card that someone sent back.
Anyhow, I'm sure OCUK are doing OK out of the situation, so not totally innocent, however given this is a global issue... cards are expensive everywhere, a large part of the cost increases will be external.
Managing these products at the moment will be taking a lot of extra resource, which is also costing more.
I have a lot of exposure to distribution in my role, when there is free supply the system almost runs itself, system planned orders arrive when expected and inventory is balanced vs predicted sales. When supply is short there can be multiple people working on a product line trying to source, you are then managing lots of small orders through mutiple routes. Thats more orders to check and put away, more invoices manage, more pressure on warehousing for slots to unload. You may be buying from a distributer you don't have an established relationship with.
Right now, you either get lucky in the FE lottery or pay the inflated prices.
I predict EU mining will crash at mid year. As difficulty increases, opportunistic miners will then look to bail to recover most of their 'investment' and there will be down pressure on new and used prices.
If crypto keeps going up.... all bets are off.