Prices vary over time. Upon seeing this, I checked the current price and it is almost twice as much as I paid at the time and the item is listed as out of stock by this seller.
Indeed, there is a 8265 listed at $21[1] and a converter listed at $8[2]. At the time, I did not know such converters existed.
FWIW the mpe-AX3000H is a repackaged ax200 not an 8265 (ac only chip). Doesn't change the price just noting it's a different chip than the 7260/mpe-AH3000H https://www.amazon.com/Compatible-AX200NGW-9260NGW-Upgrade-W...