Ah, the holy grail, a flat bed slicer - Nice!
...but, depending on distance from where you live, there are others worth a look (or at least asking questions to find out more).
Looking at them, there's a couple around here that I may 'take a punt on' if they're sub £40 - to sell on. I also see a RM-M251ce for £360! I paid £150 for my 301 (larger bladed) version of the same machine! Just shows, you can get a bargain.
Keep on top of Google and the other sites, ask on freecycle, and don't forget your local rag, mine takes adverts under £100 free - so many choose this option.
Good luck
Phil