Hey there, I'm not selling mine, but the tent my wife bought for me is under £100
It's a Forceatt tent. I have the 2 person dark green version, it weighs a smidge under 2.5kg (if that's light enough for you?) and its brilliant imo...
We used it on Dartmoor Jan 1st-2nd set it up in fading dusk light easily enough, there was snow around, frost formed on the outside and all, but inside (credit to layers and sleeping bags too I guess) we were toasty! It has an opening each side and the outer layer pins down to form a sort of vestibule for each sides gear (no ground sheet in that area though)
Shop Forceatt Tent for 2 and 3 Person is Waterproof and Windproof, Camping Tent for 3 to 4 Seasons,Lightweight Aluminum Pole Backpacking Tent Can be Set Up Quickly,Great for Hiking,Camping and Backpacking. Free delivery and returns on all eligible orders.
www.amazon.co.uk
Anyway, might be of interest also might be cheaper elsewhere?