MacBook Pro Memory Prices Are Steady, Cheap for 8GB, Pricey for 16GB
MacBook Pro memory prices are steady, with the 8GB kit at rock bottom. The 16GB kit is still based on parts that are in extremely short supply, and so it is far more expensive on a per-GB basis.
View memory prices for the MacBook Pro at OWC.
Prices are more or less the same for the iMac (same type of memory).