Check the better national outdoor stores such as Cabelas, REI, and Bass Pro Shops, get a good feel for the range in price of new tents. It is best if you can visit a store with a large selection, but those I have listed have good web-sites. Also, Check the Wal-Mart, Costco, or other discount stores in your area.
Then locate a local business that specialized in quality outdoor gear. See what the top-of-the-line looks like.
You may want to consider a good tent as a nearly lifetime investment, especially if you are working at a camp, trail crew, or other field work where you rely on a secure, dry tent for long periods.
Look for:
Floor, weight of material, type of waterproofing, seams sealed and taped, and does the material extend up the sides in a "bathtub floor".
Poles, Aluminum is generally more durable than fiberglass. Repair sections are a plus. I prefer full length pole sleeves over clips, but most tents seem to be going to the clips.
Vents, windows, mesh ventilation
a Vestibule is nice for keeping gear under cover, but out of your way.
Good center height, I don't mind having to bend, but I want to be able to stand inside.
About 10 years ago I found a $400 REI 4 season dome tent second hand for $100. It has close to 400 days of camping now and other than washing and re-waterproofing every couple years it has been worry free.
I also have a $40.00 light dome tent I got in about 1984. I used it a fair amount in the 80's and early 90's but it never could take much rain before it was soaked.
If you go cheap, go really cheap and avoid tents that are too big, or have un needed features such as room dividers. Either spend less than $75, such as this one:
http://www.cabelas.com/cabelas/en/templates/product/standard-item.jsp?_DARGS=/cabelas/en/common/catalog/item-link.jsp_A&_DAV=MainCatcat20075-cat602107_TGP&id=0031756514266a&navCount=2&podId=0031756&parentId=cat602107&masterpathid=&navAction=push&catalogCode=9IS&rid=&parentType=index&indexId=cat602107&hasJS=true
Or Closer to $200 for something like this: http://www.rei.com/product/794294
This is a little large for what you asked, but it can be considered a roomy two person +gear tent for extended camping. This is the closest to what I have: http://www.rei.com/product/777753
Hope this helps!