Thats a tough one, the price for the Seiko SCVS013 is around $350 so a watch for around $100 is quite a challenge but here goes;
http://www.amazon.com/Citizen-Eco-Drive-...807&sr=1-18The Eco-Drive watches don't need any battery replacement and have a 5-yr manufacturer warranty and will probably keep better time than the mechanical Seiko (the Seiko SCVS013 looks like a really nice watch BTW)