At those prices, I'm not surprised....
How many people are you talking about? My recommendation is to not have more than 4-6 people per tent. More than that and it will be too crowded which increases the chance of too much debris and the tent being damaged from too much use.
It would also be better to have more smaller tents than one larger one to increase the chances of fitting within the sites and keeping the wear and tear to a minimum.
Here's an example of a Coleman tent:
Coleman - Northstar X4 Tent -=
and a few from Eureka tents:
Eureka Camping Tents, Dome Tents, & Family Camping Tents
These tents can be purchased from their retailers, like Sports Authority, Big 5, Chick's, or Dick's sporting goods. Cabela's and other large sporting goods stores are another source of family tents.
Here's some things to look for or consider about tents:
1. More than two end-to-end poles to provide stability in any kinds of winds especially when you are sleeping.
2. A fly that goes all the way down to provide double walls in inclement weather.
3. screening to keeping the bugs out.
4. flaps to allow more air circulation.
5. Room for gear - Vestibules or if it's a 6 person tent, use only 4 or 5 spots, the 5th and 6th spot allow for storage.
6. a sturdy floor or use a properly fitted ground cloth or footprint.
7. Be prepared to invest in better stakes, the factory ones are always crap.
8. A cheap tent will yield cheap accomodations that need frequent replacing.
Since I don't know you very well, it might be better to find a tent and post the links for others to comment on. I have a lot of experience and can provide the good and the bad for just about any tent. It's about finding a good combination or price, size, and features that MEET your needs.
Try and do you own investigating, ask a bunch of questions before you purchase. Salesmen are very good at selling you what they've been told what to push or what gives them the best commission or bonus and will avoid what doesn't get the sale made. So watch out for those people?