I just rebuilt a set of forks from a 200X, from the busings to the seals. It's easy. The manual gives you all the info you need. Just when you disassemble them lay them out on a bench in order. I'd say it cost me about $40 a fork to do a full rebuild, that was just replacing the wear items with all genuine Honda parts. First time I'd ever had a fork down that far in years. If your just doing the seal it should take no time at all, change the fork oil while your doing it.
1985 Honda 125M (My first Trike--Still have it)
1986 Honda 250SX
1981 Honda 110
1982 Honda 110
1986 Yamaha YFM80 (Sons quad)
Past rides: 1983, 1984 200X, 3--1985 Kawasaki T-3
1987 CR-80, 70's vintage XR75, RM 370