Let me see if i understand what you are trying to say. Do you have a new ipad or an ipad 2? Because the ipad 2 has been out now for a year and 99.999% of owners have had no problems with the ipad 2 wifi connectivity.
With the "new ipad", some people are saying that they have problems with wifi. I have written here that some routers do not work well with the new ipad, and I have given ideas on how to fix them, like I did myself. Upgradiing the firmware, drivers and software of my router from the router manufacturer web page, not from Apple.
If you are unable or do not want to do that, then nobody can help you and just take it back and spend your money on a nice suit, whatever...
Since you already said that you won't buy that it is a router problem, how can you troubleshoot it when you already made up your mind? My new ipad would not connect untill I did what I wrote above.
My new HP laptop will not, again, will not connect to a wireless b signal regardless how close I am to the router. Decide and tell us which one of the ipads is the one you are talking about.