I tried to reply to your e-mail but it got returned to me. Let's discuss it here. Here's my reply.
I would be interested. Please tell me more about the size of your primroses. Are they growing in pots? Daylilies vary in price, with most average prices starting at $5 for a double fan and going up to $250 or more (for a brand new introduction), so the number I would trade for two primula is dependent on those factors.
Thanks - Daylilly99