YOU NAILED IT ON THE HEAD. VORTEX FLA IS LIKE THAT IF I GO TO DESTIN FLA THEY SAMPLE CONTENT AND TOP OFF WITH THE MIX NEEDED TO GET WHAT YOU WANT AND THEY CHARGE BY THE FT^3 OF O2 ADDED. I THINK AT THE TIME IT WAS 10c PER CUBE O2 PLUS 5.00 FOR THE FILL.
Caps Lock key is immediately to the left of the "A" key. Use it, please.