Those prices are average. I wouldn't get viper strike unless it never rains where you live, very sketch tires in the wet (zombie will disagree). The METZELER are expensive but VERY high quality tires rain or shine. Michelins are always a good choice, city grips are available in your size. The dealer price will ALWAYS be more for tires than online, our dealer cost from western powersports is often the same as online prices, so unless you really like your dealer and want to support them buy online and have the shop install them. $65 is a great deal for both installed but double check they'll do it if you bring your own rubber.