Your Dell could maybe better in terms of specs but not in terms of reliability, IBM machines are built to last for decades, I used to own an IBM 240 which was made in the year 2000 and it was still going strong in 2010 until I sold it, and I'm sure it still works today.
With that said, I can only drop the price to 25k, it's not very often that you find a notebook which gives you 8 hours of actual battery life, I have personally tested this too. This is final price drop, and since it's my favorite among all machines i've used or owned merely because of enormous battery life therefore I will gladly keep it if it doesn't sell for this price now.