A reputable gallery really shouldn't be asking you to foot the bill for printing, especially if they have in house printing facilities or if they're going to be taking a share of any sales.
tbh I've never heard of the Redbird Gallery, so I'd definitely try to find out a bit more about them if I were you.
If you decide to let them host any of your images you need to find out
exactly what rights to your work they'll have, how else they can use them, and for how long.
It's great that there's an interest in your work greywolf, but you do need to be a bit careful.
Remember, they are your images and they should be lining
your pockets...not theirs