How much is too less?

The other day, I had a conversation with a friend of mine, who was cursed by the One Plus One wrath (no offense to the die-hard fans, but they didn’t live upto the expectations set!). He was desperate to get rid of it and when Flipkart offered a decent ‘8k exchange policy’, he gladly grabbed it, and is now living a happily ever after (hopefully!) with his Moto X Style. Hardly an year since its purchase? I guess. Definitely not more than an year, and for 22k spent, its just 8k that has been returned! So, where did the 14k vanish? Let me stop you right there, before you smirk at me inside your brains and before you spill that ‘wonderful wisdom’, that it’s a mobile phone lady! A used one, at that! And the price just drops as you blink! Whoa, stop right there, again. Because, I can see it as much as you can.
Let’s look at something else now. I had another conversation with another friend of mine. This guy was pretty unperturbed by the old kid’s bicycle that rusts by the backyard, of his otherwise well kept house. When asked, he said there’s hardly anything that he would gain monetarily by disposing it, and hence he chose to keep it. Turns out that, a neighbour was interested in the cycle, wanted it for a relative living elsewhere. Of course, there was no talk about money, and the cycle is soon to depart to some other rusty corner. He added, it was bought for 4.5k (or was it 2.5k? I remember being around when it was bought) but it would hardly fall under Rs.500 worth of scrap.
After the two conversations, one thought that’s bothering me is, ‘How much is too less?’. While one person thought hardly an year of usage of the phone is worth the 14k, why isn’t the other satisfied with the 4k worth experience with the bicycle? Doesn’t your experience with a product adds to the worth of it? Why doesn’t the priceless moments with the bicycle count? On the other hand, why is that money’s value diminishing on contrast with its worth? Where do we draw the line on our spending? Well, I don’t have a final line of thought or a concluding note to this. I am as confused as I was. How much, exactly, is too less?