well mine was sitting in som1s cupboard for ages! little oil and a look over. all was fine.
not had a prob since.
and i got mine for 100 but that was of a family member. so 250 with all the stuff seems a bargain if u ask me.
som1 a bit wiser will give u some instructions on what to do if u do buy it like how to look ova the rifle.
i say go for it. maybe even try knock him down a'bit if its been sitting there.
o and by the way. what is the tx.. mk1 mk2 or mk3?
STAY AWAY FROM MK1 TX200s! unless u wanna risk losing some fingers!!