As an appliance tech, depending on the product, I will often recommend the extended service contract, depending on the price of the contract and it's length, because so much is electronic, and control boards from Korea are so cheap, but sold so expensive. However,these prices seem more than a little out of line with what your costs would be to repair these items. They're making excellent money on both ends with this for sure. If this is all they have, you're better paying the later repair price, than paying for all the repairs now at full price, when most of the problems will never happen.
MOST problems with a product happen within the first year, and then after 5 years after items wear from age or use.