Is trolling the internet your full time job???
I think you missed out some important points, possibly intentionally.
ME: I'm selling item worth 40k
+ Shipping
2 days later with all conversations :
Buyer: Can you do 40k Shipped
ME: Let me find out the price & will let you know, Can we use the PM / EMAIL route your voice is inaudible. & I need full payment upfront.
Buyer : Calls for some clarifications, I didn't pickup, sent him a msg to text me. He calls again.
ME: I picked up 2nd time & told him I will do 40K shipped
Buyer : Send me the bank details and I will do the needful.
ME: Details sent.....Starts packaging the laptop for shipping.
ME: Sends PM, Hey any update, I have the laptop ready to be shipped, here are some pictures.
Buyer: Calls, I can only pay 75% of the full price.
Me: That's not what we agreed on.
Buyer: I know but please think about it & let me know.
My Reaction: WTF why didn't you tell me that in 1 day, You wasted my time.
I should report him to the mods to save others from going through the same ordeal as me. Some people are here just to waste others time.
p.s. You don't need patience to sell, all you need is a product & a good value, If you have that it will sell like anything... Also If you don't know this already, I have sold everything I listed to be sold Including the laptop

p.p.s. For me to take your to comments seriously regarding market feedback, You trading stats should be atleast better than mine & should have bought or sold more than just a few hundred bucks worth of a memory card in the past 6 months

. You cannot give feedback about the market when you yourself don't deal in it often.