Question

not to be sneezed at British English, 

nothing to sneeze at American English spoken

Answer 1

چیزی که نباید دست کم یا کم ارزش گرفته بشه

Answer 2

نمی‌شه ردش کرد

2 not to be sneezed at British English , nothing to sneeze at American Englishspoken used about an offer, especially of money, that is very good, and which you should consider carefully :

In those days, £5 an hour was not to be sneezed at.