According to this article by www.about.com the Canon PowerShot A480, Canon PowerShot A1100, Fujifilm FinePix Z20fd, Nikon Coolpix L20, Samsung SL420 and the Sony Cyber-shot DSC-W180.
Here is the link to the article

1. Canon PowerShot A480, $105-$130 You can purchase this item from www.amazon.com for $149.00
Here is the link to www.amazon.com
http://www.amazon.com/Canon-PowerShot-A480-2-5-inch-Blue/dp/B001SER4CE/ref=sr_1_1?ie=UTF8&s=electronics&qid=1274706207&sr=8-1
http://ecx.images-amazon.com/images/I/41H46vC5TAL._AA300_.jpg

2. Canon PowerShot A1100 IS, $129-$149 You can purchased this item from www.amazon.com for $139.00
Here is the link to www.amazon.com
http://www.amazon.com/Canon-PowerShot-A1100IS-Stabilized-Green/dp/B001SER4BA/ref=sr_1_2?ie=UTF8&s=electronics&qid=1274706324&sr=1-2

http://ecx.images-amazon.com/images/I/41syxJxL-sL._AA300_.jpg

3. Fujifilm FinePix Z20fd, $139-$149 You can purchased this item from www.amazon.com for $134.99
Here is the link to www.amazon.com
http://www.amazon.com/Fujifilm-Finepix-Digital-Camera-Optical/dp/B0011ZK6YS/ref=sr_1_1?ie=UTF8&s=electronics&qid=1274706458&sr=1-1

http://ecx.images-amazon.com/images/I/510m%2B-HEZfL._AA300_.jpg

4.Nikon Coolpix L20, $109-$129 You can purchased this item from www.amazon.com for $109.00
Here is the link to www.amazon.com
http://www.amazon.com/Nikon-Coolpix-L20-Digital-Optical/dp/B001PKEJYM/ref=sr_1_1?ie=UTF8&s=electronics&qid=1274706953&sr=1-1

http://ecx.images-amazon.com/images/I/41JiGMsQrwL._SL500_AA300_.jpg

5.Samsung SL420, $119-$149 You can purchased this item from www.amazon.com for $121.99
Here is the link to www.amazon.com
http://www.amazon.com/Samsung-SL420-Digital-Stabilized-Black/dp/B001PKTRA8/ref=sr_1_1?ie=UTF8&s=electronics&qid=1274707095&sr=1-1

http://ecx.images-amazon.com/images/I/31q0kqPU1wL._SL500_AA300_.jpg

6. Sony Cyber-shot DSC-W180, $119-$139 You can purchased this item from www.amazon.com for $123.99
Here is the link to www.amazon.com
http://www.amazon.com/Sony-Cybershot-DSC-W180-SteadyShot-Stabilized/dp/B002CVTU10/ref=sr_1_1?ie=UTF8&s=electronics&qid=1274707313&sr=1-1

http://ecx.images-amazon.com/images/I/31Kh0o4d-IL._AA300_PIbundle-1,TopRight,0,0_AA280_SH20.jpg

Other digital cameras to consider would be

1.Canon A3000 IS
Review taken from
http://www.digitalcamera-hq.com/round_ups/best-affordable-camera-deals

http://ecx.images-amazon.com/images/I/4192cojYusL._SL500_AA300_.jpg

2.Nikon L19 from $129.99 You can purchase this item from www.amazon.com for $97.10
Review taken from
http://www.digitalcamera-hq.com/round_ups/best-affordable-camera-deals
http://www.amazon.com/Nikon-Coolpix-L19-Digital-Optical/dp/B001PK8FG0/ref=sr_1_1?ie=UTF8&s=electronics&qid=1274708018&sr=1-1

http://ecx.images-amazon.com/images/I/41GmH87Y7DL._SL500_AA300_.jpg

The best digital camera available on the market for under $150 is the Lumix DMC-FS8S
10.1 Megapixel Digital Camera. It comes with a Leica lens (traditionally known as the best lens manufacturer ever). I have a slightly higher upgrade - I think mine cost about $180. It's completely worth it. Check out professional camera review sites - you will see for yourself. You can find it here: http://www2.panasonic.com/consumer-electronics/shop/Cameras-Camcorders/Digital-Cameras/Lumix-Digital-Cameras/model.DMC-FS8S_11002_7000000000000005702
Note that it's received 5 stars. I would suggest going to b and h, searching for lumix with leica lens and choosing one within your price range.

as we all known that most camerial made in China is cheaper than those made in Western Counties or Japan ever with the same quality. so to be honest, $150 is really too expensive. you can find many nice cameral online or some Chinese releated shops. for shops, i don't know which country you are, so maybe i can give you a webside to have look,
http://www.disnet1.org

I would recommend Nikon Coolpix S4000 its a best point & shoot camera in the market.This is an point and shoot with great color and picture quality.
Features:-
* Flash: It is tiny. Adequate only for filling in shadows, but in a dimly lit, indoor setting you get some noise on the pictures. Indoor images tended to be well focused despite the small flash.
* Battery: I took 425 pictures (no flash) without needing to recharge.
* Ease of use: Once you get used to the idea that there are no buttons readily available (all buttons and commands go through the touch screen on the back) it is quite easy to use. There are some settings (such as BBS) which require a quick review of the manual to know what they are for.