You may have seen in VR4WGN's thread that he has moulded a replacement undertray, with a potential price of NZ$150.
In a group buy of 10, that should equate to a delivered price in the region of £110-£120 or so.
Out of curiosity, and for the sake of comparison, I emailed Camskill about sourcing OEM undertrays (using the two part numbers provided by PT ), and this is the response from Mike at Camskill:
I've rung my local dealer and he confirmed the above prices. Mitsi UK stock MR521292, and it apparently covers all model years.Originally Posted by Camskill
The MR328505 may not fit all models? (according to their system) But would seem a little odd if that were the case.
Group buy discount highly unlikely.
So, at the moment, the best UK option may well be to order an undertray from your local Mitsi dealer, for £101.14 inc VAT. And you have no delivery to worry about then.
Brad - you mentioned that the undertrays appear to be interchangeable - do you know if the later one may be just slightly different that means it accommodates a slight change, while it is also backwards-compatible, but that the earlier one might not be forwards-compatible?
Sorry Q - it might be that a UK group buy of your undertrays is a bit too expensive when compared to OEM dealer stuff.