For £10 extra I would rather get this:

http://www.scan.co.uk/products/450w-seasonic-g-450-modular-80-plus-gold-eps-12v-12cm-silnt-fan-atx-psu

If someone is on a budget, I think a £65 PSU is not on their shopping list, probably more like £40 or less.

£65 in my mind sits in the next category above ‘Budget builder’

I'd spend £65 on a PSU in a budget build. I was considering a £250 HTPC build earlier this year that included the £75 Seasonic PSU CAT linked to. I'll happily spend more on my PSU than an APU/CPU, motherboard or RAM because I value the PSU more. It is a far more important component in my mind and therefore deserves more of your budget than the other components.

As for this PSU I'm not a fan of 85 degree rated capacitors, I guess the 3 year warranty reflects Corsair's confidence in them. The performance seems good though.

Noxvayl
I'd spend £65 on a PSU in a budget build. I was considering a £250 HTPC build earlier this year that included the £75 Seasonic PSU CAT linked to. I'll happily spend more on my PSU than an APU/CPU, motherboard or RAM because I value the PSU more.

I will also, for the efficiency, long-term reduced running cost, reduced noise and because a good PSU might last me 5+ years whereas it's highly unlikely I'll still have a CPU, motherboard or RAM after that length of time.

I've got a 750W Corsair AX in my main PC, very good supply but I paid over double the cost of this one for it 2 years ago, good to see Gold efficiency coming down in price.

Gold rated for £65 is great. In a budget build, a quality PSU is essential!

Usually people I build for will want it to last 5 years or more, so for that reason I might opt for the Seasonic G Series instead, but goof to see more Gold rated PSU's in this price bracket.

£65 is good enough for me