Well I am using this product from last year & I like it very much...
Price: ? Rs. 300-400
Bought From: ? available everywhere... but too many fraudulent. I guess u have used the non-original one that's u said "No shine"
Rating: ? 7/10
Good: ? Deepshine.... You can notice the nice change in shade of metallic coloured cars. Try polishing small portion & compare the difference with rest. price is also good. It's smell is awesome & lasts for 2-3 days. I normally put the polishing cloth inside my car for fragrance
Bad: ? .... can't say as I haven't noticed any yet