for your budget i would consider buying a quality & known brand used tent rather than a cheapy new tent - unless the new tent is on a promotion ( eg 50% off at go, yeomans, campingonline etc kind of place)around the 400.00 mark are some nice tents that if you could buy for 200.00 would be ideal.
ebay gumtree are likely to be coming up with more "used once" tents from folks who bought them and someone in the family or all the family found that camping wasnt for them so you could pick up a bargain that way.
I have a freedom trail sendaro 4 tent and very happy with it I camped in hard winds and rain in bodmin and it was fine. I still have it although I have treated myself to an outwell birdland 3 tent with all the gubbins. Only annoyance is go outdoors have now changed the colour of the sendaro 4 to green. I have the blue one plus the ft canopy. I now want the green ft canopy lol to use with my birdland so if anyone has the green canopy and wants the blue I will swap!!!
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