Prices of goods in India

I am always interested in prices of various things among countries. After being here for a few weeks, here is a list of some goods and services I had. Some are pretty cheap, some are about average compared to those in the US. I group them based on some sort of category.
Early caveat here: I didn't buy everything that's listed here ;)

The approx. conversion rate is: Rs 40 ("40 Rupees") = US$ 1 ("1 US dollar")

Lifebuoy body soap: Rs 10 = US$ 0.25
Colgate toothpaste: Rs 56 = US$ 1.4 (my poor Darlie toothpaste I brought from Chicago, had to be let go in the Chicago airport :p, as it's more than 3 oz. liquid, aargh!!)
Bath tissue, 2 rolls: Rs 74 = US$ 1.85

Small bananas (similar to "pisang susu"), a bunch ("satu sisir"): Rs 18 = US$ 0.45
Masala dosa (at a "standup" place, where you stand and eat): Rs 15 = US$ 0.38
Wheat bread, a loaf: Rs 14 = US$ 0.35
Mineral water, 1 ltr: Rs 20 = US$ 0.5
Veggie dish from the food court in the mall: Rs 60 = US$ 1.5
Fuji apples, 1 kg: Rs 73 = US$ 1.8
Steamed rice at a fine Chinese restaurant: Rs 100 = US$ 2.5
An entree at a fine Chinese restaurant: Rs 150-250 = US$ 3-6
King Fisher's beer, a bottle: Rs 150 = US$ 3.75
Mushroom shahi roll in an Indian restaurant: Rs 160 = US$ 4 (this is yummy!)
A shot of Tequila in an Indian restaurant: Rs 250 = US$ 6.25
An entree at TGIF: ~Rs 250-350 = US$ 6-10
Buffet brunch at Little Italy (a fine Indian/Chinese/Italian restaurant): Rs 600 = US$ 15

Drawing book: Rs 40 = US$1 (Isn't it cheap?! I bought several for myself, hehe..)
Shawl: Rs 400-600 = US$ 10-15
Knee-length cotton kurta (an Indian top): Rs 556 = US$ 14

Auto rikshaw fare from apartment to Forum mall, 6 km: Rs 40 = US$ 1
Bus fare to Hyderabad, 10-hr journey in a med-luxury bus: Rs 700 = US$ 17.5

Another thing. Tax is 12.5% in Bangalore (in Karnataka state), but merely 4% in Hyderabad (in Andhra Pradesh state). Huge difference!

There is TGIF near my office. The prices are very close to those in the US, except the place is like a bar -- very noisy and loud, and full of smoke. Urgh, I didn't like it there.
I also find difficulty shopping here, as the general rule is, I should bargain, while I can't tell quality and I don't know what the reasonable prices are for various things :(. However in a way I feel glad because I can practice and not feel so bad if I buy wrongly... as things are not very expensive :p