So caveat emptor, let the buyer beware.

所以货物售出概不，购买者只能自己上心。

The salesman says with a laugh, " No way! All sales are final" !

" 不可能！概不（All sales are final）！"

And the pet store didn't have a grace period or a return policy or anything?

宠物店就没个宽期或者包之类的吗？

Okay, great, and what is the return policy?

吧 挺好 那条件是什么?

The store’s policy is not to allow returns or exchanges.

【exchange】该商店的规定是商品概不。

Which phrase makes you feel more comfortable: " All sales final, " or " Money-back guarantee" ?

哪个词组让你感觉更舒服：“恕不”还是“款保证”？

The rail operator said that it has also improved policies on freight and changing train tickets during the Spring Festival rush.

国铁集团还改进了火车票购票和政策，以更好地方便春运期间的出。