NASC Auction - hybrid seeds

Hey folks, where I have hybrid seed with reciprocal crosses (e.g. S. species a x species b vs S. species b x species a where the species/hybrid following the x is the pollen donor) would you prefer I offer both as one item or each as separate items?

So:

Item - S. a x b and S. b x a

vs.

Item 1 - S. a x b
Item 2 - S. b x a

shipping would be combined if the same person won both crosses in the second instance.

Which would you prefer?

I would rather seem them as separate items, preferably with a link to the reciprocal in each post. If that would make too much to keep track of, I'm sure that combining them wouldn't be an issue.