Everyone hits Psar Tuol Tom Pong (Russian Market) but makes the rookie mistake of staying in the front entrance tourist zone on Street 163. The real treasure hunting happens in the back sections and outer perimeter stalls where locals actually shop - silk scarves cost 20000-50000 riel instead of the criminal 100000+ riel tourist prices up front.

Enter through the lesser-known back entrance on Street 155 (south side) around 6-7am when vendors are setting up and morning regulars arrive. This massive market complex spans 4 city blocks - allocate minimum 3 hours if you want to explore properly beyond the token souvenir browsing.

The pricing geography is honestly shocking: front stalls targeting tour groups charge 300% markup on identical items. Work your way clockwise from the back entrance through the fresh produce section (incredible for hostel cooking), vintage clothing corner (genuine 1970s Cambodian textiles), and Buddhist amulet stalls where serious collectors browse.

Take Bus Line 03 from Wat Phnom for 1000 riel, getting off at the Mao Tse Toung Boulevard intersection. Morning temperatures are 6-8°C cooler than midday, plus you avoid the 10am-2pm tourist bus invasion when the narrow aisles become unbearable. Bring reusable bags - vendors appreciate customers who aren't obviously passing through.

Pro tip: The herb and spice vendors in section C (back left corner) will teach you about Cambodian cooking ingredients if you show genuine interest. That knowledge is worth more than any overpriced souvenir.