reed?

im very familiar with reed valves and their purpose...but where to get one other than Venice motor bike.all seem to be out of stock that sell for less than 90.00.i want to get one but im uncertain where to purchase one.any input would help.thanks in advance.

thanks again,i just ordered one from David Rust from arrow cycle and all i can say is he is very knowledgable and willing to share his vast knowledge with potential customer.he is fantastic.i will be ordering a cyclnder for one of my many(four) gas bikes next week.i had only enough money to get the reed.but i cant say how polite he was and spent considerable time on the phone with me explaining these motors.thanks again
Dallas Dean.