The only people that get good bargains at the PC show are the first 30 in line out of 3000 looking to get super cheap deals.
The PC show is just a disaster. You can hardly move, the promoters with microphones are way too loud, idiot parents take up the isle with prams and there are so many kiasu MF's pushing about will drive you crazy.
You will honestly not get better prices at the PC show. In fact, when PC Show, IT Show, Comex, Sitex etc. are taking place, its an excellent time to visit Sim Lim and Funan, which are less crowded - and they all have the same prices anyway! Last IT show I found my Canon 550D $200 cheaper at Funan than the RRP advertised by everyone at the show!
Somebody out there recommend a simlim shop that won't rip anyone off?
Just avoid the bottom three floors, and the shops on the "outer ring" which are mostly selling crap anyway. The shops on 4-6 tend to be more respectful.
Splatted - go to Sim Lim, take the lift to 6th floor and walk clockwise down to 4th floor. Look for shops with stacks of boxes on the walls behind the counters, they tend to be system builders. Collect a price list from each shop, sit down and you will definitely find something in your price range. My last PC was from Video Pro, who I was happy with.