就是“你愿意出多少” “我想用xx跟你换之类的” “太便宜了”“太贵了”这些

总觉得用英语书教的那些会显得太生硬了点

足够了 别人不会因为你看起来像同胞就给你便宜点的

what's your offer?
WTT with xxx
too low
too high
shut up and take my money

How much you would like to pay?

Can you exchange （trade) your XXX with my XXX? Would you like to~~

too low too high ........

口语化一点 简洁一点

可以用 put down your money and get out 么

be a man

说起这个，我记得很多年前去美服的天堂2，那里的外国人都会说 rang yi rang和cao ni ma

JB, too expensive!

越像外国人越好（是指对外国人来说的外国人

也就是用标准的中式英语就可以了

这个要加65535，最好是用那种口音说出来，哈哈。

你怎么知道是外国人

楼主可来eve bazaar一游
https://forums.eveonline.com/default.aspx?g=topics&f=277

http://www.tf2outpost.com/
去这里学习下吧

买觉得高了
“Can you do better than XXX? pal”，
"I am glad to offer you XXX, what you say?"
“”
卖觉得低了
"C'mon, man, you can spare more change on this epic."
“Dude, I guarantee XXX is the best offer you can get”

交换
“Hi, Can I trade your XXX with YYY?”

any discount?

suck your ass----太贵了
suck my ball---太便宜
i wanna bang you sister with my XXX---我想用XXX和你交换
此乃美国俚语，不可从字面意思理解，说出来人家懂的

万能的：You're breaking my balls!