If you want my guess: some marketing bright spark tried "round pound" pricing and was surprised to find that it worked.

如果让我来猜，估计情况是这样的：一些市场营销“天才”试了试“整数价”，然后惊讶地发现，这招居然很管用。

youdao

The retailer is adding 60 stores a year offering thousands of products at the 'round pound' price point.

这家零售商每年新增60家门店，提供成千上万种价格为整整一英镑的产品。

youdao

The second is psychological. Do "round pound" prices or those ending in 99p seem cheaper? The article cites the same "expert" supporting both views.

第二种是心理上的。是“整数价”还是以99便士作尾数的价格看上去更便宜？文章引用了同一位“专家”的话，来支持双方的观点。

youdao

The best barometer is the Egyptian pound which has come under a new round of intensive selling, hitting a series of record lows at the start of 2013.

CNN: STORY HIGHLIGHTS

Standing in front of the Keep The Pound truck that had been so rapturously received by Tory supporters as it drove round the country, Mr Hague began to address the crowd.

BBC: Battle for sterling won in 10 minutes