i built my computer back in april 2009 and i bought 6gb ddr3 ram for 85$ on newegg, i dont think it was some random sale because there was several different brands and speeds of 6gb (3x2gb) ram for under 100$, now its all >140$ and the exact same ram i bought is now 170$
was just wondering since im building a computer for a friend
Are you sure it wasn't on sale? Or that you're looking at the same sticks (same speed, same CAS Latency, same brand)?
I've been watching frequently since June/July last year, and 4 GB DDR3 1333 mhz was about $90 then. It dropped a little in late fall/early winter, and then increased to about $100 for 4 GB soon after the New year. I highly doubt the price doubled in a couple of months...
That invoice doesn't actually say anything about any sales. It will only show what you paid for it. You'd need to find a picture of the shopping cart. That would show any instant savings or other specials.
I remember DDR3 prices changing daily on newegg when I built my system (triple channel was still somewhat new). At times, the platinum OCZ set was cheaper than the slower (speed and CAS) gold set...made no sense.