What price nostalgia?

Anyone else have the occasional hankering for one of their childhood toys? I scratched an itch this week when I obtained this 1960s building block set. My memory of them was so vivid even though I was probably under 5 when I had a set. Just got to lay my hands on a Johnny Seven gun and a technoflex mystery shooting gallery now. I've seen the former for sale for as much as £1,500 and the latter, a measly £60 but even that is a tad too much to pay for a little trip down memory lane.