You can often find a bargain lurking on the BVM site.
DCKits also have a few Bachmann, Hornby, Heljan and Dapol bargains:
Bachmann: Deltics - £100, Freightliner 08 - £99.50
Hornby Brit (Owen Glendower) - £140, Drummond 700 - £75, LMS 8F - £90, J15 - £60, D16 - £75
Dapol: Bubble car - £85
Heljan: Cl33 - £90, Cl128 - £65
There is more, but these looked like highlights to me.
Good luck: https://www.dckits-devideos.co.uk/index.php?route=common/home
Steve