Yes, RST are great shells but here is the thing:
RST starts at $100/flat, and postage is $22, for a final price of
$12.20 per box.
AA costs $7.99 per box. I have coupons for Sportsman's Warehouse for $10 off of $50 purchase. So, 7 boxes (costing $55.93) puts me over the $50 threshold. Thus, the 7 boxes actual cost $45.93, plus 6% tax for a total of $48.69. THEN, there is a $2 rebate per box, making the final price
$4.96 per box. Confused yet?

Bottom line is, they are CHEAP and have a generally good rep.....so if they are appropriate for the guns then they are a good value and I will be loading up.