You want to talk about ripping off Mac users for memory take a look at the prices on apple.com.

pretty much all other "Mac Memory Specialists" sell it for less.

Yeah but I guess they'll still buy it for the sticker.

They slacked by not slaping a ESA certified sticker on the PSU

The "Low Profile Mac Memory" schpeel is the same tactic memory companies have done for years. Take your standard JDEC offering, which will work in Macs just fine, slap a Mac sticker on it and charge 1.5-3 times more. 

A Mac memory controller works just like a PC one in regards to timings - it reads the SPD and goes off of that. You don't need "special" Mac memory made in a special Mac only factory and blessed with holy Mac water (Holy machine oil actually ;). The only thing "Mac specific" about these might be that they'll only use 1.8-1.95v instead of an unrealistic (for a Mac anyway) voltage of 2.1v.

Macs were only once picky with high density non-JDEC FPM, EDO, SDRAM, & DDR DIMMS - this has never been an issue with DDR2. At the same most Intel boards before the DDR age didn't particularly like odd ball El Cheapo DIMMs and SIMMs anyways. At one point in time, Apple released some firmware updates that made non-JDEC spec memory or memory without proper SPD information "disappear" to the system. This annoyed some people as you'd imagine and Mac memory retailers got a new marketing toy. Ironically enough, most of the disabled memory came from "Mac Memory Specialists" who in turn blamed "evil generic memory." Memory sellers (especially Mac specific ones) still use this to scare people into buying "Mac memory."

lol ya, 1kw PSUs, we need more of those.