Much as I didn't want to buy the yearly PC Club arrangement, there's some nice downloads in the bonus that are tempting me (hydra, hatchling dragon, and a few more). If I buy two DAZ originals, at $20 each, does the $30 voucher apply to both ($20 against one item, $10 against the other)? Ot, does the voucher have to be applied against only a single item?