In my experience getting reasonably priced shoes is at least 50% getting the right discounts. In the US, Saucony seems to do ridiculous discounts all the time. For EU I've had issues finding cheaper Sauconies, but MisterRunning usually has a lot of reasonable discounts.
I haven't ran in the Ride 15s (although I tried them on), so I can't comment on shoes which may be similar in feel.
In my experience getting reasonably priced shoes is at least 50% getting the right discounts. In the US, Saucony seems to do ridiculous discounts all the time. For EU I've had issues finding cheaper Sauconies, but MisterRunning usually has a lot of reasonable discounts. I haven't ran in the Ride 15s (although I tried them on), so I can't comment on shoes which may be similar in feel.