Hello-
Welcome to the world of manufacturing, there's multiple cashback portals one of them being Ebates but you can check and use Yazing, befrugal, simplebest coupons etc
you can check cashbackmonitor to see what cashback portals are paying on cashback.

One other site to purchase cards is giftcardmall but with them be careful start slow order 1 card every week for a while do not ramp up too fast or they will shut you down.

Walmart sell moneygram money orders but there's other store that sell western union money orders.

Good Luck