Anyway here's the guide:
Well, this is a guide about Autohotkey. Autohotkey is basically a downloadable program which lets you have haggles built right into letter hotkeys.
For example, I am restocking, and I see an decent item,I get to the haggle page, and the item costs 33,552 nps, autohotkey would allow me to already have a haggle set in place. So i would press "z" and get an instant haggle of 35353. I then click the pet and am done. I used this to restock legit and it was very useful. It saved the time i would need to haggle, and you can never misshaggle.
You need to download this program at
http://www.autohotkey.com/.
Then you will need to write a script,
for example:
c::
Send 90909
return
This means when I hit the key c, a preset haggle of 90909 is already entered in for me.
If you need more help with this or arent understanding, please PM me.