"A very cheap portable AC whose price is its only remarkable feature."
An 8,000 BTU rating indicates the unit's raw heat-removal capacity. However, all portable ACs are inefficient, so its real-world effect will feel more like a powerful fan in a 350 sq. ft. room on a truly hot day.
This makes sense for someone needing any cooling for a small bedroom or office (under 250 sq. ft.) where the absolute lowest upfront cost is the only priority. Consider it a temporary solution for a single-season heatwave.
Anyone cooling a room near the 350 sq. ft. limit, sensitive to noise, or concerned with their electricity bill should avoid this. The lack of efficiency specs means running it frequently will quickly erase any upfront savings.