tom mckenzie has been taking a look at some of the most popular devices.> the gadget show here in london is a mecca for tech geeks, showcasing everything from 3d printing to smart tvs. organizers expect around 30,000 people to flock through the doors and check out the hottest gadgets and gizmos for this holiday season. >>> maybe these will make it into your stocking this year. a humanoid robot the size others in an organized league. fully modified versions could set you back as much as 5,000 pounds. and if that seems steep, why not build a robot yourself on this, a 3d printer that's on sale for 300 pounds? and if that's all too high tech for you, what about this? paper made from stone that you can write on under water. all well and good, but at this year's gadgets show, there were two companies that everyone was interested in. and in the green corner, microsoft. in the blue corner, tony. the battle lines have been well and truly drawn this year with ps4 hoping to take a chunk of the market share to prove you need far more than a tablet to have a decent gam

we're taking flight with cnbc's tom mckenzie, taking us through the booking process for ryan air, theking process that has changed the industry. >> reporter: so what's it like to travel ryan air? first stop, booking tickets. so this is ryan air's all new revamped website. the thing that jumps out is the price tag, 1499. that's about $22 just for a one-way ticket. we're going to go to dublin, clicking on it here and put in our details. >> buy it high and sell it cheap. nobody piles it higher or sells it cheaper. >> reporter: if you're not careful the final price can quickly add up. if you forget to print out your boarding pass at home, ryan air will kindly do it for you for a 70 pound fee. this is enough to give many passengers the cold sweat. if your luggage doesn't fit perfectly into here, just that's another fee for ryan air. the airline charges for everything from reserve seating and priority boarding to checked in bags. 20% of revenues come from ancillary sales like food and drink, with staff driven hard to meet targets. there's a risque ryan air cabin crew calendar. profits from

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tom mckenzy is taking us through the booking process for ryan air, the booking process that changed theustry. >> so what's it like to travel ryanair? first stop, booking tickets. so this is ryanair's all new revamped website. the thing that jumps out is the price tag, 14.99. that's backside 22 just for a one-way ticket. we're going to go to dublin. we're clicking on it here and want to put in our details. >> it's about pilot high and sell it cheap. we won that comprehensively. >> but if you're not careful, the final price can add up. >> if you at the time forget to print out your boarding pass at home, ryanair will do it for, but for a fee of 07 pounds. if your luggage doesn't fit perfectly in here, that's another fee for ryanair. >> the airline charges for everything from reserve seating and priority board to go checked in bags. 20% of revenues come from an sillry sales like food and drink with staff driven hard to meet targets. there's a riskque calendar. for some, ryanair's price is all that matters. >> i thought it was a roblly cheap airline. it's ran do i come how you get your seat