Yes it was probably worth more.
Average Monthly Search Stats - [kem]
Average Monthly Searches: 33,875
Average Cost Per Click: $0.95 USD
Average Ad Competition: high
OK. Not many of those searches would go to the .biz without some heavy SEO. I would probably have bid up to approx $120, if I was wanting this domain. However, you would have maximum benefit if you had a plan for this domain. It might be a difficult resell however.