Having a gradual clearout, bought a job lot of these and pretty sure I don't need quite as many as I have.  Pictured with a few different sticks to give an idea of how the fit, sticks obviously not included.

TYPE A - 25/50 DIMMS - 7 AVAILABLE

Fits up to 50 DIMMs without HS or 25 with HS.  These are the same ones you'll find for £4.10 from china if you search 'memory tray' on ebay.

TYPE B - 25 DIMMS - 1 AVAILABLE

A sturdier tray, fits 25 DIMMs with or without HS.  Downside is HS like the geil ones shown here that stick out the edges won't sit all the way down in the tray, lid still sits on them OK but is resting on the DIMMs rather than fully seated.  Also an issue with DIMMs that have a big SPD chip right in the top corner.  Quite a lot nicer to use though as the lid and slots are a much looser fit.

PRICES AND POSTAGE

£2/tray (either type).  £3 postage within UK (RM 2nd class small parcel), I can fit up to 6 Type A or 4 Type A + Type B in one box.  International postage probably wouldn't be worth it.

Payment through paypal (goods and services is fine, I'll take the hit on the fees).  Also happy to sell for cash if anyone feels like visiting the beautiful historic city of Lancaster.

PMed

Sold, apparently international postage was worth it.