'kay. Talk to either Andrew or Geoff, or find someone who is in the the G1MRA - like me- who can identlfy a likely prospect in the sales and wants.
This is Andrew's current list in pdf form..........http://asterhobbies.co.uk/wp-content/uploads/2019/08/Pre-owned-Asters-10-Aug-1.pdf
This is Geoff's -
https://rushfordbarnmodels.co.uk/Models for Sale V2.htm
As you can see, he has an Aster 5MT for £4200 and a Castle for £3950.
The Aster Panniers, in any livery, are noted as racers and need some careful driving to keep them from leaving the track and going into orbit. They are also renowned for breaking their crank axle, leaving you with a shelf ornament while you source a replacement - luckily we have a company who does this. Andrew currently has at least two, and you can buy from him in complete confidence. Chris Arundell is another name to conjure with, over here in Narfk.
Joining the G1MRA ought to be compulsory, but it isn't, more's the pity. Almost 4000 of us all over the world enjoy what must be the very best newsletter and journal of its kind, four times a year. There are meetings all over the country, and numerous exhibitions. Our local Anglia group has a large UK-outline layout, but my German and Canadian stuff will still fit it. Also our Facebook and website is worth a look.