Mon Mome proved last year when scoring at 100-1 than anything can with the Grand National, and two horses worth a second look at massive prices are Eric's Charm and Ollie Magern.
Eric's Charm is no spring chicken at the tender age of 12, but comes into the race on the back of a cracking win at Newbury.
Before that he had looked to be something of a Sandown specialist and best when going right handed.
Indeed, his trainer Oliver Sherwood believes he would be near favoruite for today's race if it was run other other way round but is hopeful that his grand old campaigner will still run a huge race nonethless.
He said: "The Newbury win knocked a few doubters, but as A P [McCoy] said afterwards, Newbury is basically two long straights with very easy turns. Aintree is not that much different, although the Canal Turn and Becher’s are two left-handed jumps which are going to test him. He’s run at Aintree once, in the Topham [2008] when he fell at the sixth. Dominic Elsworth, who rode him that day, thought he jumped a bit steeply.
“Though he does tend to be at the head of affairs in his races, he doesn’t have to be a front runner. That would be the last thing we would be worried about. You don’t go expecting to win a National - you need luck in running - but after about two miles, if he’s still thereabouts we might start getting excited. If he’s out there on the second circuit. He will stay and is in the best form of his life."
*Eric's Charm is currently a top priced 50-1
Ollie Magern has been a grand servant to Gold Cup winning trainer Nigel Twiston-Davies and the 200-1 on offer about him for today's race is certainly a bit of an insult.
He has been out of form this season, but showed more of his old sparkle when finishing seventh to Chief Dan George in the William Hill Trophy at the Cheltenham Festival.
That race has proved a good guide to finding National winners over the years, and he ran far better than his finishing position suggests - staying on strongly from two out without ever threatening the leaders.
He was beaten around 14 lengths that day by The Package and is slightly worse off at the weights today with David Pipe's charge.
However today's marathon distance could bring them a lot close together and when you consider that The Package is 12-1, you can see why the 200s on offer for Ollie makes some appeal.
The 12-year-old came to grief at the second last year, but jumping is usually his forte and he has tumbled down the weights.
His handler reports him to be in tip-top form, and if Tom Molly can get him round the first circuit he is certainly no rank outsider.
*Ollie Magern is currently a top priced 200-1