You could, yes. You'd have to pay for any other skip you wanna use, but you aren't locked to a single skip per character. I doubt you'd get a discount for the second story skip though, you'd probably have to pay the full price for each skip you use (though the ARR is cheaper than the HW skip and the HW skip is cheaper than the SB skip)

I assume this is for an alt since it looks like you are level 80 already, but if it isn't, I highly recommend against story skipping on your first character. Especially past ARR, though even ARR shouldn't be skipped on your first playthrough since it sets up basically everything that's to come.