Recently, I was looking for adapters that will connect my laptop to external screens/projectors so I need a Mini DisplayPort to DVI and a Mini DisplayPort to VGA. In Thailand, Apple sells them for 1,000 baht (about $33) each. I think the price is quite steep so I went to DealExtreme and search for them. It turns out that the adapters are about 300 baht (about $10) and they work fine with all the monitors I connect them to. Since it's so cheap, I bought a few and leave them at the office and at home too so I will be able to connect to an external monitor wherever I work.
Now I have my eyes on some digital microscopes that sell for $30-40. I already have one that I got from ThinkGeek.com but I paid over $300 for it two years ago. With this cheap price, I should get one or two for my students so that they can explore the microscopic world around them a bit.
DealExtreme offer free shipping worldwide and I usually receive my orders in 2-3 weeks.