Two years ago the control board on our oven went out. The burners still worked, fortunately. The control board for our oven was as much as a new (cheaper) oven. It was spring, so we decided to make due with crockpots, the electric wok, and the stove burners. We also kept looking for boards.
Six months later, just as cold weather was making us crave oven-roasted comfort foods, a control board popped up on ebay for a third of all previous prices we had found. Ordered it, installed it, and the oven is still working perfectly. We couldn't have purchased a new oven for the price of the control board, especially not one as nice as ours.
All this to say, continue to keep an eye out for the part at a better price!