It's cheap until I order the wrong style of ram 3 times!

Yeah, that's happened to me at least once over the last 20 years, too...

helps if I read the labels.....

When I was managing several hundred machines, I just created a spreadsheet of the types of RAM, Drives, etc... to keep it straight.

Ordered a 6GB upgrade for my Mac Pro. Got it last Wednesday, sent back the same day 'cause it just wouldn't work. Correct parts, though....

I'm waiting for the replacement set.