Didn't realise people were still posting to this thread, so that's the reason for my delay in replying.
I can only suggest that 3dfx USA was seperated with 3dfx Europe over the Velocity 200.
After all, the majority of US based boards were produced in Mexico post-STB/3dfx merge era, and Europe's in Taiwan.
It can only be suggested that a number of Velocity 200's were produced in Europe and not the USA. This is possible.
GAME are an official licensed UK market seller of PC and console games including console and PC hardware. It would be illegal to falsely advertise or sell such items in their stores.

I spoke to the store manager who currently works there since the stores opening, AND the head of dispatch at Electronics Boutique, and they BOTH remember stocking the cards, where EB's shipment also got transferred to the GAME store.
EB showed me a back catalogue of orders under section
'IBMPC_STOCK_HRD', and under the listing is an order for a quantity of 10 items labelled
'3DFXVC200_16M_AGP' and 15 items labelled
'3DFXVC100_8M_AGP'. However, there are no sale records so I cannot tell you how many were sold.
I asked for a photocopy of the order sheets so I could scan them and show you but as I'm not an employee, it's against their policies to outsource their companies market history as it could be advantageous to rival companies if in the wrong hands.

So there is proof, as well as what I have seen with my own eyes, as it is formally recorded within market documentation.
I rest my case.