I'm waiting a couple of days to see if my choice comes down in price a little.
Amazingly, I noticed that Apple's RAM upgrade prices have fallen considerably, at least for MBP RAM. The one I'm looking at (as most Macs do nowadays) comes with 2GB, upgrading to 4 (2 x 2GB SDRAM chips) is $100. Even OWC only offers a $97.xx equivalent. Hardly worth the trouble to replace them at home. OTOH, user modifications would provide a couple of 1GB chips to sell of for at least a few dollars.
If one takes the time to actually do that...