You'll also need to pony up for lenses that were actually built for a full-frame sensor to really get your money's worth, though our hats off to Nikon for letting you use any old lens you please.

ENGADGET: Nikon D700 review roundup

In my day you went off to war: World War II, the Korean conflict and Vietnam to get your tuition money from the government.

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However, the real money saver is you can get peak and off-peak carnets to mix and match your tickets.

BBC: More ways to save money on train fares