I don't know if it still is the case, but WI could not sell anything for less than cost on BF. A lot of people came over to MN to shop.
I'd have to move if I lived in one of those states... :)
I wouldn't try your debit card first and then expect to pay with a check if it doesn't go through. I hit my daily limit once and when tried to write a check after the debit declined the retailer would not allow me to do so.
Their reasoning was that the debit card declined and the check is being written off the same account so they wouldn't take it. Thankfully I had a credit card.
I'd write checks for the big purchases and save your debit card for smaller purchases.
On a slightly off topic thing here...our WalMart just got the Cricut in and they are selling it for 179 regular price. Can't remember what the cartidges are off the top of my head, but they weren't too bad.