1. It is not strictly true that all games (current and in near future) are unable to take advantage of HT on the i7s. IIRC, there are a few new games that can (based on benchmarks). The issue with i7s (I mean the mainstream ones, not the extreme/enthusiast ones with >4 cores, which are another kettle of fish), is that the cost differential does not really justify the performance gain over i5s as of now. Plus, most games are bottlenecked by the GPU, while the CPU bound games are unfortunately also the ones that are mostly single threaded (I'm lookin' at you, Total War... for all the time I spend helping out at the forum...)
2. When buying from Tradepac,
a) buy and assemble on your own
b) check that you get what you want and pay for (check the exact model number)
c) simply do not buy the part if they don't have stock and suggest something else (unless you are 100% surefire that the suggested part is a suitable replacement and it isn't a carrot chopping attempt)