There are budget mountain tents to a high spec such as the Vango Typhoon 200.

http://www.outdoorworlddirect.co.uk/vango-typhoon-200-mountain-tent.html

These a used a lot of the youngsters carrying out Duke of Edinburgh Award expeditions. The only downside is again the weight at around 3.2 Kg. This type of tent although not a full mountaineering 4 season tents being of a semi geodesic design are still pretty tough and robust in poor weather conditions. They are moderately priced for their performance.