These will not be the specs stated, i bought a box a while ago on alibaba that claimed 8gb ram with 128gb storage, the actual box had 1gb ram and 8gb storage.They have them on alibaba for £12.95 with power leads and choice of plug but minimum was 2 orders and not sure about postage.
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If it sounds too gd to be true it usually is.
I usually go on slimbox website see what boxes they have firmware for and then get them on aliexpress.
I would highly recommend the x96 m200 and the x88 pro x5m.
They both are running on the new amlogic s905x5m cpu with 4gb ram, they run rings around those allwinner cpu's.
Aliexpress has a sale on at the moment.