Comments on: The winds of change http://iangrey.org/2006/12/03/the-winds-of-change/ A riotous colour of life's rich tapestry Sat, 10 Jan 2009 00:16:30 +0000 http://wordpress.org/?v=2.7 hourly 1 By: Ian Grey http://iangrey.org/2006/12/03/the-winds-of-change/comment-page-1/#comment-31 Ian Grey Mon, 04 Dec 2006 18:34:00 +0000 http://iangrey.org/the-winds-of-change/#comment-31 I was going to do an NPV (Net Present Value) calculation where it is assumed that you have the money already but don't spend it and use it to get interest, a figure that also dints the business case.<br/><br/>However, we are simple Yorkshire folk here in my regular audience!<br/><br/>As an aside, the Windsave WS1000 Plug 'n Save (tm) is actually £1,498 so there is another three quid to find...<br/><br/>NPV I was going to do an NPV (Net Present Value) calculation where it is assumed that you have the money already but don’t spend it and use it to get interest, a figure that also dints the business case.

However, we are simple Yorkshire folk here in my regular audience!

As an aside, the Windsave WS1000 Plug ‘n Save ™ is actually £1,498 so there is another three quid to find…

NPV

]]> By: Serf http://iangrey.org/2006/12/03/the-winds-of-change/comment-page-1/#comment-30 Serf Mon, 04 Dec 2006 08:10:00 +0000 http://iangrey.org/the-winds-of-change/#comment-30 You failed to include the time value of money. If you borrowed that £1,495 at a rate of 5%, then you would need to pay around £200 per year to repay it. So it just about breaks even.<br/><br/>It is still at the level of a gimmick, and prices need to come down significantly to make it a real option. You failed to include the time value of money. If you borrowed that £1,495 at a rate of 5%, then you would need to pay around £200 per year to repay it. So it just about breaks even.

It is still at the level of a gimmick, and prices need to come down significantly to make it a real option.

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