Typically, $1 chips trade for a $3 value, $5 chips trade for a $7.50 value. You are asking for $90 in trade value for $45 in trade value. Yes, they have the same face value, but there is a lot more effort in obtaining 30 chips than 6, thus the difference in trade value. Generally, I have seen $5 chips trade for 3 $1 chips, not 5. That's my experience.

Michael Siskin