Acer's new Predator BiFrost Intel Arc A770 OC graphics card is for sale in Taiwan, with a listing on Acer's official store in Taiwan having the card in stock for NT$12,900 which works out to a shave over $400 USD.
If you can't buy Intel's slick Arc A770 Limited Edition (which there were so few made) then you might want to try your chances for a custom AIB model, with the Acer Predator BiFrost Intel Arc A770 OC graphics card featuring factory overclocking, as well as 16GB of GDDR6 memory.

16GB of GDDR6 memory is important because remember Intel offers their new Arc A770 graphics card with either 16GB GDDR6 or 8GB of GDDR6, depending on the model. Intel's own in-house Arc A770 Limited Edition graphics card features 16GB of GDDR6 memory, while the custom GUNNIR Intel Arc A770 Flux graphics card has just 8GB of GDDR6 memory.
- Read more: Acer teases the best-looking custom Arc A770 graphics card yet
- Read more: Acer's new Predator Arc A770 BiFrost graphics card spotted, looks good
ASRock and GUNNIR have Intel Arc A770 graphics cards but they both have 8GB of GDDR6 memory, so the new custom Acer Predator BiFrost Intel Arc A770 OC with its 16GB of GDDR6 memory stands out as the best AIB card in the Arc A770 arsenal so far.
Another issue as VideoCardz points out is buying the custom Intel Arc cards, because Intel doesn't make it easy getting their did-they-only-make-20-cards-or-something Arc A770s... and AIB cards are even harder.

GUNNIR only sells its Intel Arc cards through the Chinese JD store, ASRock sells its Phantom and Challenger Intel Arc cards through Newegg, and then there's the Acer Predator BiFrost Intel Arc card that is sold exclusively through Acer's official store in Taiwan.
Nice work, Intel. Getting the Arc journey flowing smoothly worldwide (I can't buy one here in Australia, period).
Acer's new Predator BiFrost Intel Arc A770 OC graphics card is one of the very best Arc A770 cards you can buy: it has 16GB of GDDR6 memory (the other GUNNIR + ASRock Arc A770s have 8GB GDDR6 memory), the GPU is overclocked to 2400MHz (Expreview did overclock the GUNNIR Intel Arc A770 Flux to 2650MHz GPU) while the TDP is 250W default, and 285W in OC mode.