Found: 4Gb SD cards for RNSE for £4.99!
I last ordered a 4Gb SD card about 4 years ago just as SDHC was really taking off and I got a pair for £8 each. Since then I've tried ordering more and they were £25-£40!
A few months ago, when updating my music collection, I lost one of those 4Gb cards, so have been looking again and just found some for £4.99 incl delivery!! I've ordered and received one, tested it and it's definitely NOT a SDHC, so it will work in the RNSE. Two more jsut been ordered!
As much as I loath Amazon's tax-doging tactics in the UK, these guys are the only suppliers of the type of 4Gb SD cards in the UK for under £20!
Platinum 177106 Secure Digital 4 GB SD Card: Bestmedia: Amazon.co.uk: Computers & Accessories
I am NOT affiliated with this supplier in any way and I'm not vouching for the quality of the cards, but what they are selling cheap and compatible with the RNSE.