All of my RAM has been purchased from
Other World Computing (OWC). They sell the same DIMMs Apple uses at a small fraction of what Apple charges.
You weren't kidding when you said "small fraction." I bought a matched pair of 1Gb modules for a total of two Gb for $77.99 plus shipping. The package should arrive tomorrow. The price difference was breathtaking. It almost seemed too good to be true, but OWC has a good reputation and I value your experience. Thank you for the suggestion. Best regards.