Some observations on cheap one-person shelters, including on their design, proliferation, and history, and comparison between some shelters.
The REI Co-op Flash Air 2 Tent is a two-person hybrid single/double-wall shelter with dual entrances and vestibules. It is non-freestanding and can be pitched with two trekking poles to save weight or by using the included pole set.
The NEMO Equipment Hornet Elite 2P (33 oz / 935 g, $499.95) is a semi-freestanding, double-walled, ultralight tent. It features design touches meant to increase the volume of the tent while not adding additional weight.