Any advice on buying a second hand X5 on ebay

[Guest guest]

Hello all, I'm thinking of buying a second-hand X5 on eBay. Thing is

the price varies a lot, I can't pick them up and check them out, buy

the wrong one and there'll be no refund - any tips on what to avoid?

The really old ones (mustard yellow handle, 1970's) tend to be cheaper -

but that's really old plastic - does it matter?

Prices people pay for a second-hand X5 vary so much - from around £25

all the way to £80 and sometimes I can't figure out why.

Any advice please?

Regards, Graham (in my late '50's wanting to get slimmer/fitter)