I agree. With most money orders, using a credit card involves a hefty transaction fee. Another option is to go to your bank and get a cashiers check, but there are no points for that.
Doesn't it seem like a lot of work to get $250 store credit? If you make 125 x $1 purchases, then those better be 125 things you want, becuase deducting that cost you'd be left only $125 ahead.
Or you could just buy $250 at BR and use one of the frequent sales to get 50% off.