Well, why don't you just cut the BU-50R's price in one-third to 125 KS(Since the rifle itself went down to one-third the price)? I mean even though it is just a clip of ammo, it's a reuseable one. That increases it's value and becomes a more reasonable price to the gun. Anyway, you still have the normal BU-50's that don't recharge, and they would more fit around being 50 KS(or less.)
Also, a BU-50R Clip is kinda pointless unless you have a BR-50 to go with it. What have those gone down to?