I don't know much about Indian cent errors, or how much of a premium they bring, but Numismedia puts the price of a 64RB at $96. So you couldn't have overpaid by that much.
if you bought it, and are happy, then yes.. you did great! I dont know much about IHC erros either, but i do like a good IHC coin!!!
Jeff, The standard Clipped Planchets and Off-Center errors are a dime a dozen (not in reality, just using the term as an example) as there are generally hundreds, if not thousands of them for sale on eBay and elsewhere every day. However, "End of Strip" (end of the planchet stock roll) Clips are much more harder to find and especially so in Indian Head Cents. Therefore, I believe that you did good on the price! Frank