merry tiller rotovator

I am bdding on ebay for a merry tiller rotovator which is described as being in good working order. It is apparently between 20-30 years old.

I have put in a maximum bid of £85 and am currently winning with £77.

If i win i will go look at it first before parting with any money.

Does anyone have any idea if this is a reasonable amount to pay for a second hand merry tiller assuming of course it works ok and is there anything i should look out for before parting with my money.

http://www.chat.allotment-garden.org/album_pic.php?pic_id=919

Is that a photo of the actual beast itself?
if so, it may be just my dodgy eyesight, but it looks like its been fitted with a set of spikes rather than rotovator blades.
apart from that, if it comes with the blades and you win at £85ish for a working order tiller, I'd say that wasn't too bad. Just remeber that merry tillers are getting a bit long in the tooth now, and spares will get more difficult to get hold of.
and of course, if I was selling it and someone won the aution and then said no thanks, I would be pretty darn narked having had to pay for the advert in the first place/ wasted time and effort and so on.

Hammers07, even tho it is an internet auction when you place your bid and win you have entered a legally binding contract with the seller and he could make you pay for it. So if poss look at it before end of auction if possible and if you decide its not for you, you could then find out if you could recind your bid.