Best Scale for the Budget?

Hey everyone! I have a question that I need help with. Im pretty sure my scale is screwy...I usually weigh myself every week or two and when I do, I do it 2 or 3 times to make sure the number is correct. Lately it has been giving me a number, then going up like 7 pounds, and the 3rd going down like 5 pounds....So Im in need of a new scale.
My question is, what is a GOOD scale to purchase without spending a ton of money? Thanks everyone!!