Tramontina from Wal-mart, right now their running a special with strainer, bowls and pots about $75 for all. We bought them before the special and didn't get the bowls and strainer.
They are induction certified.

I found Kuhn-Rikon sauce pans at TJMaxx. I like them a lot. I also bought the Rachel Ray non stick fry pans at Linens and Things. They were a bit pricey, but with 20% off coupons, not too bad. I like they way they are weighted, the handles are comfortable and they go in the dishwasher.

I carry a little magnet in my purse to test cookware. Macy's seemed to have a lot that would work, including Martha Stewart. Induction must be catching on. If All-Clad is not in your budget (not in mine, and I find the handles to be very uncomfortable), you can certainly mix and match pieces and get what you need.

I purchased a 5 qt Tramontina saute pan at Costco for $29. It's my favorite pan, even compared to a couple of All-Clad skillets I've got.

I had my QVC sets before I had the cooktop and was worried that I would need to spend a lot of money on new cookware. I tested them and they are perfect for an everyday set. Try the QVC Stainless Cook's Essentials. Their Techniques brand may not be good for the induction but if you call their CS, they can tell you. Remember though, most of them have not even heard of induction, so you may have to explain it.

Good luck - you'll have fun with the induction.

I know you are looking for an inexpensive set of ccokware, sometime in the future I strongly recommend that you get at least one piece of Demeyere or All-Clad (I'm much more partial to Demeyere). Yes, this type of cookware is an initial expensive investment, but the difference between them and others is remarkable. You don't have to be a pro chef to appreciate it. I'm sure you spent some good money on your cooktop. To get the most out of it, you'll need high quality cookware. Cookware that will heat evenly, quickly and all the way to the to of the cooking vessel. You really have to see for yourself.

If you keep an eye out at Sears, they have an extremely nice 8 piece induction set that they make available on special sale a few times a year. It is called Kenmore Elite Triply Stainless and is fully clad on the sides and the bottom of the pans. Very nice feeling handles and good solid construction similar to All Clad. The set goes on sale for $99.

Here is a link that might be useful: Kenmore Triply Stainless Induction Cookware

I too like Kuhn-Rikon found at TJ Maxx or Homegoods. These are high quality sold at really reduced prices.

I bought the following set from Sears:
http://www.kenmore.com/shc/s/p_10154_12604_00809570000P?mv=cf&vName=Kenmore&cName=Cookware+%26+Gadgets

Partially because the Christmas gift I received from my father was a Sears gift certificate, but I am really happy with how well the set looks and works on the induction cooktop.

In addition to the set I got a small and a large non-stick frying pan, that match the set of pots. (the cooktop came with a free medium non-stick frying pan)

Thanks everyone! Through using my trusty magnet, I also discovered Costco has a few options available.

I'm really happy with my Favorit and 365+ cookware from Ikea.