Your inbox is full so replying here.
Yasir bhai, there are a lot of things to consider. For eg, a Sensation costs 43k and the Optimus costs 30k. HTC has better resale than LG. Sensation is a dual core Optimus is a single core. 8 mpix vs 5 mpix camera. RAM. Screen size. Better specs, better build etc etc. Therefore I cant say yes to you right now. I will wait for some time for other offers as well and then decide. As far as the difference is concerned, I guess a fair amount would be 15k. But like I said, I cant say yes or no right now. Id like to wait and see what other phones come up for trade. If the amount is acceptable to you, kindly inform me and I will keep your phone in mind and inform you for sure in a day or two about the deal.
Regards.